diff --git a/chart/org.eclipse.birt.chart.reportitem.ui/src/org/eclipse/birt/chart/reportitem/ui/ChartExpressionButton.java b/chart/org.eclipse.birt.chart.reportitem.ui/src/org/eclipse/birt/chart/reportitem/ui/ChartExpressionButton.java
index 227990073bf..4a0bae1064f 100644
--- a/chart/org.eclipse.birt.chart.reportitem.ui/src/org/eclipse/birt/chart/reportitem/ui/ChartExpressionButton.java
+++ b/chart/org.eclipse.birt.chart.reportitem.ui/src/org/eclipse/birt/chart/reportitem/ui/ChartExpressionButton.java
@@ -12,6 +12,7 @@
 package org.eclipse.birt.chart.reportitem.ui;
 
 import java.util.Collection;
+import java.util.Iterator;
 import java.util.LinkedHashSet;
 import java.util.LinkedList;
 import java.util.List;
@@ -31,8 +32,10 @@
 import org.eclipse.birt.report.designer.internal.ui.dialogs.expression.ExpressionButton;
 import org.eclipse.birt.report.designer.internal.ui.util.ExpressionButtonUtil;
 import org.eclipse.birt.report.designer.ui.dialogs.IExpressionProvider;
+import org.eclipse.birt.report.model.api.ComputedColumnHandle;
 import org.eclipse.birt.report.model.api.Expression;
 import org.eclipse.birt.report.model.api.ExtendedItemHandle;
+import org.eclipse.birt.report.model.api.elements.structures.ComputedColumn;
 import org.eclipse.swt.SWT;
 import org.eclipse.swt.widgets.Composite;
 import org.eclipse.swt.widgets.Control;
@@ -229,7 +232,7 @@ public void setBindingName( String bindingName, boolean bNotifyEvents )
 		if ( bindingName != null && bindingName.length( ) > 0 )
 		{
 			exprCodec.setBindingName( bindingName,
-					isCube( ),
+					isCube( bindingName ),
 					eHelper.getExpressionType( ) );
 			eHelper.setExpression( exprCodec.getExpression( ) );
 		}
@@ -249,6 +252,39 @@ public void setBindingName( String bindingName, boolean bNotifyEvents )
 		lastExpr.setType( eHelper.getExpressionType( ) );
 	}
 
+	private boolean isCube( String bindingName )
+	{
+		Object context = this.eHelper.getContextObject( );
+		if ( context instanceof ExtendedItemHandle )
+		{
+			ExtendedItemHandle eih = (ExtendedItemHandle)context;
+			Iterator bindings = eih.getAvailableBindings( );
+			while ( bindings.hasNext( ) )
+			{
+				Object binding = bindings.next( );
+				if ( binding instanceof ComputedColumnHandle )
+				{
+					ComputedColumnHandle cch = (ComputedColumnHandle)binding;
+					if ( cch.getName( ).equals( bindingName )
+							&& cch.getExpressionProperty(
+									ComputedColumn.EXPRESSION_MEMBER ) != null
+							&& cch.getExpressionProperty(
+									ComputedColumn.EXPRESSION_MEMBER )
+									.getStringValue( ) != null
+							&& cch.getExpressionProperty(
+									ComputedColumn.EXPRESSION_MEMBER )
+									.getStringValue( )
+									.startsWith(
+											ExpressionUtil.MEASURE_INDICATOR ) )
+					{
+						return true;
+					}
+				}
+			}
+		}
+		return this.isCube( );
+	}
+
 	public void setExpression( String expr, boolean bNotifyEvents )
 	{
 		if ( expr != null && expr.length( ) > 0 )