diff --git a/brouter-core/src/main/java/btools/router/RoutingContext.java b/brouter-core/src/main/java/btools/router/RoutingContext.java
index 8b31ead..bdd3eca 100644
--- a/brouter-core/src/main/java/btools/router/RoutingContext.java
+++ b/brouter-core/src/main/java/btools/router/RoutingContext.java
@@ -37,8 +37,8 @@ public final class RoutingContext implements DistanceChecker
     return name;
   }
 
-  public BExpressionContext expctxWay;
-  public BExpressionContext expctxNode;
+  public BExpressionContextWay expctxWay;
+  public BExpressionContextNode expctxNode;
 
   public boolean serversizing = false;
   
diff --git a/brouter-core/src/main/java/btools/router/RoutingEngine.java b/brouter-core/src/main/java/btools/router/RoutingEngine.java
index d1fb894..579d9df 100644
--- a/brouter-core/src/main/java/btools/router/RoutingEngine.java
+++ b/brouter-core/src/main/java/btools/router/RoutingEngine.java
@@ -9,6 +9,9 @@ import java.util.Date;
 import java.util.List;
 
 import btools.expressions.BExpressionContext;
+import btools.expressions.BExpressionContextGlobal;
+import btools.expressions.BExpressionContextNode;
+import btools.expressions.BExpressionContextWay;
 import btools.expressions.BExpressionMetaData;
 import btools.mapaccess.NodesCache;
 import btools.mapaccess.OsmLink;
@@ -80,9 +83,9 @@ public class RoutingEngine extends Thread
       
       BExpressionMetaData meta = new BExpressionMetaData();
       
-      BExpressionContext expctxGlobal = new BExpressionContext( "global", meta );
-      rc.expctxWay = new BExpressionContext( "way", rc.serversizing ? 262144 : 4096, meta );
-      rc.expctxNode = new BExpressionContext( "node", rc.serversizing ?  16384 : 1024, meta );
+      BExpressionContextGlobal expctxGlobal = new BExpressionContextGlobal( meta );
+      rc.expctxWay = new BExpressionContextWay( rc.serversizing ? 262144 : 4096, meta );
+      rc.expctxNode = new BExpressionContextNode( rc.serversizing ?  16384 : 1024, meta );
       
       meta.readMetaData( new File( profileDir, "lookups.dat" ) );
 
diff --git a/brouter-expressions/src/main/java/btools/expressions/BExpressionContext.java b/brouter-expressions/src/main/java/btools/expressions/BExpressionContext.java
index 54fa55e..ddf2456 100644
--- a/brouter-expressions/src/main/java/btools/expressions/BExpressionContext.java
+++ b/brouter-expressions/src/main/java/btools/expressions/BExpressionContext.java
@@ -22,7 +22,7 @@ import btools.util.Crc32;
 import java.util.Random;
 
 
-public final class BExpressionContext
+public abstract class BExpressionContext
 {
   private  static final String CONTEXT_TAG = "---context:";
 	
@@ -63,33 +63,23 @@ public final class BExpressionContext
   private int minWriteIdx;
 
   // build-in variable indexes for fast access
-  private int costfactorIdx;
-  private int turncostIdx;
-  private int uphillcostfactorIdx;
-  private int downhillcostfactorIdx;
-  private int initialcostIdx;
-  private int nodeaccessgrantedIdx;
+  private int[] buildInVariableIdx;
 
-  private float[] _arrayCostfactor;
-  private float[] _arrayTurncost;
-  private float[] _arrayUphillCostfactor;
-  private float[] _arrayDownhillCostfactor;
-  private float[] _arrayInitialcost;
-  private float[] _arrayNodeAccessGranted;
+  protected float[][] arrayBuildInVariablesCache;
 
-  public float getCostfactor() { return _arrayCostfactor[currentHashBucket]; }
-  public float getTurncost() { return _arrayTurncost[currentHashBucket]; }
-  public float getUphillCostfactor() { return _arrayUphillCostfactor[currentHashBucket]; }
-  public float getDownhillCostfactor() { return _arrayDownhillCostfactor[currentHashBucket]; }
-  public float getInitialcost() { return _arrayInitialcost[currentHashBucket]; }
-  public float getNodeAccessGranted() { return _arrayNodeAccessGranted[currentHashBucket]; }
+  abstract String[] getBuildInVariableNames();
+
+  protected float getBuildInVariable( int idx ) 
+  {
+    return arrayBuildInVariablesCache[idx][currentHashBucket];
+  }
 
   private int linenr;
 
   public BExpressionMetaData meta;
   private boolean lookupDataValid = false;
 
-  public BExpressionContext( String context, BExpressionMetaData meta )
+  protected BExpressionContext( String context, BExpressionMetaData meta )
   {
     this( context, 4096, meta );
   }
@@ -100,7 +90,7 @@ public final class BExpressionContext
    * @param context  global, way or node - context of that instance
    * @param hashSize  size of hashmap for result caching
    */
-  public BExpressionContext( String context, int hashSize, BExpressionMetaData meta )
+  protected BExpressionContext( String context, int hashSize, BExpressionMetaData meta )
   {
      this.context = context;
      this.meta = meta;
@@ -113,12 +103,13 @@ public final class BExpressionContext
      _arrayInverse = new boolean[hashSize];
      _arrayCrc = new int[hashSize];
 
-    _arrayCostfactor = new float[hashSize];
-    _arrayTurncost = new float[hashSize];
-    _arrayUphillCostfactor = new float[hashSize];
-    _arrayDownhillCostfactor = new float[hashSize];
-    _arrayInitialcost = new float[hashSize];
-    _arrayNodeAccessGranted = new float[hashSize];
+     // create the build-in variables cache     
+     int nBuildInVars = getBuildInVariableNames().length;
+     arrayBuildInVariablesCache = new float[nBuildInVars][];
+     for( int vi=0; vi<nBuildInVars; vi++ )
+     {
+       arrayBuildInVariablesCache[vi] = new float[hashSize];
+     }
   }
 
   /**
@@ -406,12 +397,10 @@ public final class BExpressionContext
      decode( lookupData, currentInverseDirection, currentByteArray );
      evaluate( lookupData );
 
-     _arrayCostfactor[currentHashBucket] = variableData[costfactorIdx];
-     _arrayTurncost[currentHashBucket] = variableData[turncostIdx];
-     _arrayUphillCostfactor[currentHashBucket] = variableData[uphillcostfactorIdx];
-     _arrayDownhillCostfactor[currentHashBucket] = variableData[downhillcostfactorIdx];
-     _arrayInitialcost[currentHashBucket] = variableData[initialcostIdx];
-     _arrayNodeAccessGranted[currentHashBucket] = variableData[nodeaccessgrantedIdx];
+     for( int vi=0; vi<buildInVariableIdx.length; vi++ )
+     {
+       arrayBuildInVariablesCache[vi][currentHashBucket] = variableData[buildInVariableIdx[vi]];
+     }
 
      _receiver = null;
      return false;
@@ -669,13 +658,13 @@ public final class BExpressionContext
       linenr = 1;
       minWriteIdx = variableData == null ? 0 : variableData.length;
 
-      costfactorIdx = getVariableIdx( "costfactor", true );
-      turncostIdx = getVariableIdx( "turncost", true );
-      uphillcostfactorIdx = getVariableIdx( "uphillcostfactor", true );
-      downhillcostfactorIdx = getVariableIdx( "downhillcostfactor", true );
-      initialcostIdx = getVariableIdx( "initialcost", true );
-      nodeaccessgrantedIdx = getVariableIdx( "nodeaccessgranted", true );
-
+      // create the build-in variables
+      String[] varNames = getBuildInVariableNames();
+      buildInVariableIdx = new int[varNames.length];
+      for( int vi=0; vi<varNames.length; vi++ )
+      {
+        buildInVariableIdx[vi] = getVariableIdx( varNames[vi], true );
+      }
 
       expressionList = _parseFile( file );
       float[] readOnlyData = variableData;
diff --git a/brouter-expressions/src/main/java/btools/expressions/BExpressionContextGlobal.java b/brouter-expressions/src/main/java/btools/expressions/BExpressionContextGlobal.java
new file mode 100644
index 0000000..b0764f6
--- /dev/null
+++ b/brouter-expressions/src/main/java/btools/expressions/BExpressionContextGlobal.java
@@ -0,0 +1,35 @@
+// context for simple expression
+// context means:
+// - the local variables
+// - the local variable names
+// - the lookup-input variables
+
+package btools.expressions;
+
+
+
+public final class BExpressionContextGlobal extends BExpressionContext
+{
+  private static String[] buildInVariables =
+	  {};
+	  
+  protected String[] getBuildInVariableNames()
+  {
+    return buildInVariables;
+  }
+
+  public BExpressionContextGlobal( BExpressionMetaData meta )
+  {
+    super( "global", meta );
+  }
+
+  /**
+   * Create an Expression-Context for way context
+   *
+   * @param hashSize  size of hashmap for result caching
+   */
+  public BExpressionContextGlobal( int hashSize, BExpressionMetaData meta )
+  {
+    super( "global", hashSize, meta );
+  }
+}
diff --git a/brouter-expressions/src/main/java/btools/expressions/BExpressionContextNode.java b/brouter-expressions/src/main/java/btools/expressions/BExpressionContextNode.java
new file mode 100644
index 0000000..d6e90dc
--- /dev/null
+++ b/brouter-expressions/src/main/java/btools/expressions/BExpressionContextNode.java
@@ -0,0 +1,38 @@
+// context for simple expression
+// context means:
+// - the local variables
+// - the local variable names
+// - the lookup-input variables
+
+package btools.expressions;
+
+
+
+public final class BExpressionContextNode extends BExpressionContext
+{
+  private static String[] buildInVariables =
+	  { "initialcost" };
+	  
+  protected String[] getBuildInVariableNames()
+  {
+    return buildInVariables;
+  }
+
+  public float getInitialcost() { return getBuildInVariable(0); }
+
+
+  public BExpressionContextNode( BExpressionMetaData meta )
+  {
+    super( "node", meta );
+  }
+
+  /**
+   * Create an Expression-Context for way context
+   *
+   * @param hashSize  size of hashmap for result caching
+   */
+  public BExpressionContextNode( int hashSize, BExpressionMetaData meta )
+  {
+    super( "node", hashSize, meta );
+  }
+}
diff --git a/brouter-expressions/src/main/java/btools/expressions/BExpressionContextWay.java b/brouter-expressions/src/main/java/btools/expressions/BExpressionContextWay.java
new file mode 100644
index 0000000..7d0597d
--- /dev/null
+++ b/brouter-expressions/src/main/java/btools/expressions/BExpressionContextWay.java
@@ -0,0 +1,43 @@
+// context for simple expression
+// context means:
+// - the local variables
+// - the local variable names
+// - the lookup-input variables
+
+package btools.expressions;
+
+
+
+public final class BExpressionContextWay extends BExpressionContext
+{
+  private static String[] buildInVariables =
+	  { "costfactor", "turncost", "uphillcostfactor", "downhillcostfactor", "initialcost", "nodeaccessgranted" };
+	  
+  protected String[] getBuildInVariableNames()
+  {
+    return buildInVariables;
+  }
+
+  public float getCostfactor() { return getBuildInVariable(0); }
+  public float getTurncost() { return getBuildInVariable(1); }
+  public float getUphillCostfactor() { return getBuildInVariable(2); }
+  public float getDownhillCostfactor() { return getBuildInVariable(3); }
+  public float getInitialcost() { return getBuildInVariable(4); }
+  public float getNodeAccessGranted() { return getBuildInVariable(5); }
+
+
+  public BExpressionContextWay( BExpressionMetaData meta )
+  {
+    super( "way", meta );
+  }
+
+  /**
+   * Create an Expression-Context for way context
+   *
+   * @param hashSize  size of hashmap for result caching
+   */
+  public BExpressionContextWay( int hashSize, BExpressionMetaData meta )
+  {
+    super( "way", hashSize, meta );
+  }
+}
diff --git a/brouter-expressions/src/main/java/btools/expressions/ProfileComparator.java b/brouter-expressions/src/main/java/btools/expressions/ProfileComparator.java
index e525a8d..639f02d 100644
--- a/brouter-expressions/src/main/java/btools/expressions/ProfileComparator.java
+++ b/brouter-expressions/src/main/java/btools/expressions/ProfileComparator.java
@@ -29,18 +29,18 @@ public final class ProfileComparator
     File profile1File = new File( args[1] );
     File profile2File = new File( args[2] );
     int nsamples = Integer.parseInt( args[3] );
-    testContext( lookupFile, profile1File, profile2File, nsamples, "way" );
-    testContext( lookupFile, profile1File, profile2File, nsamples, "node" );
+    testContext( lookupFile, profile1File, profile2File, nsamples, false );
+    testContext( lookupFile, profile1File, profile2File, nsamples, true );
 
   }
   
-  private static void testContext( File lookupFile, File profile1File, File profile2File, int nsamples, String contextName )
+  private static void testContext( File lookupFile, File profile1File, File profile2File, int nsamples, boolean nodeContext )
   {
     // read lookup.dat + profiles
     BExpressionMetaData meta1 = new BExpressionMetaData();
     BExpressionMetaData meta2 = new BExpressionMetaData();
-    BExpressionContext expctx1 = new BExpressionContext(contextName, 4096, meta1 );
-    BExpressionContext expctx2 = new BExpressionContext(contextName, 4096, meta2 );
+    BExpressionContext expctx1 = nodeContext ? new BExpressionContextNode( meta1 ) : new BExpressionContextWay( meta1 );
+    BExpressionContext expctx2 = nodeContext ? new BExpressionContextNode( meta2 ) : new BExpressionContextWay( meta2 );
     meta1.readMetaData( lookupFile );
     meta2.readMetaData( lookupFile );
     expctx1.parseFile( profile1File, "global" );
diff --git a/brouter-expressions/src/test/java/btools/expressions/EncodeDecodeTest.java b/brouter-expressions/src/test/java/btools/expressions/EncodeDecodeTest.java
index aeda4e8..09f90ef 100644
--- a/brouter-expressions/src/test/java/btools/expressions/EncodeDecodeTest.java
+++ b/brouter-expressions/src/test/java/btools/expressions/EncodeDecodeTest.java
@@ -19,7 +19,7 @@ public class EncodeDecodeTest
   	
     // read lookup.dat + trekking.brf
     BExpressionMetaData meta = new BExpressionMetaData();
-    BExpressionContext expctxWay = new BExpressionContext("way", 4096, meta );
+    BExpressionContextWay expctxWay = new BExpressionContextWay( meta );
     meta.readMetaData( lookupFile );
     expctxWay.parseFile( new File( profileDir, "trekking.brf" ), "global" );
 
diff --git a/brouter-map-creator/src/main/java/btools/mapcreator/OsmCutter.java b/brouter-map-creator/src/main/java/btools/mapcreator/OsmCutter.java
index 8d08b11..3fd2fdb 100644
--- a/brouter-map-creator/src/main/java/btools/mapcreator/OsmCutter.java
+++ b/brouter-map-creator/src/main/java/btools/mapcreator/OsmCutter.java
@@ -13,6 +13,8 @@ import java.io.File;
 import java.io.FileOutputStream;
 
 import btools.expressions.BExpressionContext;
+import btools.expressions.BExpressionContextNode;
+import btools.expressions.BExpressionContextWay;
 import btools.expressions.BExpressionMetaData;
 
 public class OsmCutter extends MapCreatorBase
@@ -46,11 +48,11 @@ public class OsmCutter extends MapCreatorBase
                 		 );
   }
 
-  private BExpressionContext _expctxWay;
-  private BExpressionContext _expctxNode;
+  private BExpressionContextWay _expctxWay;
+  private BExpressionContextNode _expctxNode;
 
-  private BExpressionContext _expctxWayStat;
-  private BExpressionContext _expctxNodeStat;
+  private BExpressionContextWay _expctxWayStat;
+  private BExpressionContextNode _expctxNodeStat;
 
   public void process (File lookupFile, File outTileDir, File wayFile, File relFile, File profileFile, File mapFile ) throws Exception
   {
@@ -61,14 +63,14 @@ public class OsmCutter extends MapCreatorBase
 
     BExpressionMetaData meta = new BExpressionMetaData();
 
-    _expctxWay = new BExpressionContext("way", meta );
-    _expctxNode = new BExpressionContext("node", meta );
+    _expctxWay = new BExpressionContextWay( meta );
+    _expctxNode = new BExpressionContextNode( meta );
     meta.readMetaData( lookupFile );
     _expctxWay.parseFile( profileFile, "global" );
 
     
-   _expctxWayStat = new BExpressionContext("way", null );
-   _expctxNodeStat = new BExpressionContext("node", null );
+   _expctxWayStat = new BExpressionContextWay( null );
+   _expctxNodeStat = new BExpressionContextNode( null );
 
     this.outTileDir = outTileDir;
     if ( !outTileDir.isDirectory() ) throw new RuntimeException( "out tile directory " + outTileDir + " does not exist" );
diff --git a/brouter-map-creator/src/main/java/btools/mapcreator/RelationMerger.java b/brouter-map-creator/src/main/java/btools/mapcreator/RelationMerger.java
index 848b9c6..c85eb2b 100644
--- a/brouter-map-creator/src/main/java/btools/mapcreator/RelationMerger.java
+++ b/brouter-map-creator/src/main/java/btools/mapcreator/RelationMerger.java
@@ -6,7 +6,7 @@ import java.io.EOFException;
 import java.io.File;
 import java.util.HashMap;
 
-import btools.expressions.BExpressionContext;
+import btools.expressions.BExpressionContextWay;
 import btools.expressions.BExpressionMetaData;
 import btools.util.CompactLongSet;
 import btools.util.FrozenLongSet;
@@ -22,8 +22,8 @@ public class RelationMerger extends MapCreatorBase
 {
   private HashMap<String,CompactLongSet> routesets;
   private CompactLongSet routesetall;
-  private BExpressionContext expctxReport;
-  private BExpressionContext expctxCheck;
+  private BExpressionContextWay expctxReport;
+  private BExpressionContextWay expctxCheck;
  // private BExpressionContext expctxStat;
 
   private DataOutputStream wayOutStream;
@@ -44,11 +44,11 @@ public class RelationMerger extends MapCreatorBase
   {
     // read lookup + profile for relation access-check
 	BExpressionMetaData metaReport = new BExpressionMetaData();
-    expctxReport = new BExpressionContext("way", metaReport );
+    expctxReport = new BExpressionContextWay( metaReport );
     metaReport.readMetaData( lookupFile );
 
 	BExpressionMetaData metaCheck = new BExpressionMetaData();
-    expctxCheck = new BExpressionContext("way", metaCheck );
+    expctxCheck = new BExpressionContextWay( metaCheck );
     metaCheck.readMetaData( lookupFile );
 
     expctxReport.parseFile( reportProfile, "global" );
diff --git a/brouter-map-creator/src/main/java/btools/mapcreator/WayLinker.java b/brouter-map-creator/src/main/java/btools/mapcreator/WayLinker.java
index 26934f5..eedf1e9 100644
--- a/brouter-map-creator/src/main/java/btools/mapcreator/WayLinker.java
+++ b/brouter-map-creator/src/main/java/btools/mapcreator/WayLinker.java
@@ -7,7 +7,8 @@ import java.io.RandomAccessFile;
 import java.util.Collections;
 import java.util.List;
 
-import btools.expressions.BExpressionContext;
+import btools.expressions.BExpressionContextNode;
+import btools.expressions.BExpressionContextWay;
 import btools.expressions.BExpressionMetaData;
 import btools.util.ByteArrayUnifier;
 import btools.util.ByteDataWriter;
@@ -46,8 +47,8 @@ public class WayLinker extends MapCreatorBase
 
   private long creationTimeStamp;
   
-  private BExpressionContext expctxWay;
-  private BExpressionContext expctxNode;
+  private BExpressionContextWay expctxWay;
+  private BExpressionContextNode expctxNode;
 
   private ByteArrayUnifier abUnifier;
   
@@ -83,8 +84,8 @@ public class WayLinker extends MapCreatorBase
     BExpressionMetaData meta = new BExpressionMetaData();
     
     // read lookup + profile for lookup-version + access-filter
-    expctxWay = new BExpressionContext("way", meta);
-    expctxNode = new BExpressionContext("node", meta);
+    expctxWay = new BExpressionContextWay( meta);
+    expctxNode = new BExpressionContextNode( meta);
     meta.readMetaData( lookupFile );
 
     lookupVersion = meta.lookupVersion;
diff --git a/brouter-mem-router/src/main/java/btools/memrouter/TwinRoutingEngine.java b/brouter-mem-router/src/main/java/btools/memrouter/TwinRoutingEngine.java
new file mode 100644
index 0000000..bbb8ff9
--- /dev/null
+++ b/brouter-mem-router/src/main/java/btools/memrouter/TwinRoutingEngine.java
@@ -0,0 +1,98 @@
+package btools.memrouter;
+
+import java.io.File;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import btools.expressions.BExpressionContext;
+import btools.router.OsmNodeNamed;
+import btools.router.OsmTrack;
+import btools.router.RoutingContext;
+import btools.router.RoutingEngine;
+
+public class TwinRoutingEngine extends RoutingEngine
+{
+  private static Object graphSync = new Object();
+  private static GraphLoader graph;
+  
+  public TwinRoutingEngine( String outfileBase, String logfileBase, String segmentDir,
+          List<OsmNodeNamed> waypoints, RoutingContext rc )
+  {
+    super( outfileBase, logfileBase, segmentDir, waypoints, rc );
+  }
+
+  public void doRun( long maxRunningTime )
+  {
+	if ( routingContext.localFunction != null && routingContext.localFunction.startsWith( "../im/") )
+	{
+	  doMemoryRun( maxRunningTime );
+	}
+	else
+	{
+      super.doRun( maxRunningTime );
+	}
+  }
+
+  static private Map<String,BExpressionContext[]> expressionCache = new HashMap<String,BExpressionContext[]>();
+  
+  private void doMemoryRun( long maxRunningTime )
+  {
+    try
+    {
+	  synchronized( graphSync )
+	  {
+	    if ( graph == null )
+	    {
+	    	loadGraph();
+	    }
+	    
+/*	    // reuse old expression-caches
+	    BExpressionContext[] exp = expressionCache.get( routingContext.localFunction );
+	    if ( exp == null )
+	    {
+	    	exp = new BExpressionContext[2];
+	    	exp[0] = routingContext.expctxWay;
+	    	exp[1] = routingContext.expctxNode;
+	    	expressionCache.put( routingContext.localFunction, exp );
+	    }
+	    else
+	    {
+	      System.out.println( "re-using exp-ctx for : " + routingContext.localFunction );
+	      routingContext.expctxWay = exp[0];
+	      routingContext.expctxNode = exp[1];
+	    }	    
+*/
+	    OsmLinkP.currentserial++;
+	    ScheduledRouter router = new ScheduledRouter( graph, routingContext, this );
+	    foundTrack = router.findRoute( waypoints.get(0), waypoints.get(1), "17.12.2014-19:00", routingContext.getAlternativeIdx() );
+        System.out.println( "linksProcessed=" + router.linksProcessed + " linksReProcessed=" +  router.linksReProcessed);
+        System.out.println( "skippedChained=" + router.skippedChained + " closedSkippedChained=" +  router.closedSkippedChained);
+        
+	    System.out.println( "expCtxWay: requests: " + routingContext.expctxWay.requests + " requests2: " + routingContext.expctxWay.requests2 + " cache-misses: " + routingContext.expctxWay.cachemisses );
+        
+	  }
+    }
+    catch( Exception e )
+    {
+    	e.printStackTrace();
+    	errorMessage = e.getMessage();
+    }
+  }
+
+  
+  private void loadGraph() throws Exception
+  {
+	  File parentDir = new File( segmentDir ).getParentFile();
+	  File nodeTilesIn = new File( parentDir, "unodes55");
+	  File wayTilesIn = new File( parentDir, "waytiles55");
+	  File[] fahrplanFiles = new File[2];
+      fahrplanFiles[0] = new File( parentDir, "fahrplan_nahverkehr.txt" );
+      fahrplanFiles[1] = new File( parentDir, "fahrplan.txt" );
+      
+	  graph = new GraphLoader();
+	  graph.process( nodeTilesIn, wayTilesIn, fahrplanFiles, routingContext.expctxWay );
+  }
+
+  
+}
diff --git a/brouter-routing-app/src/main/java/btools/routingapp/BRouterView.java b/brouter-routing-app/src/main/java/btools/routingapp/BRouterView.java
index 5824fe4..f34bb42 100644
--- a/brouter-routing-app/src/main/java/btools/routingapp/BRouterView.java
+++ b/brouter-routing-app/src/main/java/btools/routingapp/BRouterView.java
@@ -11,7 +11,6 @@ import java.io.IOException;
 import java.io.InputStream;
 import java.io.InputStreamReader;
 import java.util.ArrayList;
-import java.util.Date;
 import java.util.List;
 import java.util.Map;
 import java.util.Set;
@@ -30,7 +29,7 @@ import android.os.Environment;
 import android.util.DisplayMetrics;
 import android.view.View;
 import android.widget.Toast;
-import btools.expressions.BExpressionContext;
+import btools.expressions.BExpressionContextGlobal;
 import btools.expressions.BExpressionMetaData;
 import btools.mapaccess.OsmNode;
 import btools.router.OsmNodeNamed;
@@ -683,7 +682,7 @@ private long startTime = 0L;
           
           // parse global section of profile for mode preselection
       	  BExpressionMetaData meta = new BExpressionMetaData();
-          BExpressionContext expctxGlobal = new BExpressionContext( "global", meta );
+          BExpressionContextGlobal expctxGlobal = new BExpressionContextGlobal( meta );
           meta.readMetaData( new File( profileDir, "lookups.dat" ) );
           expctxGlobal.parseFile( new File( profilePath ), null );
           expctxGlobal.evaluate( new int[0] );