Bug 202038 errors occurred when preview the attached design file.
data/org.eclipse.birt.data.tests/test/org/eclipse/birt/data/engine/binding/FeaturesTest.java
public void testResultIteratorFindGroup3( ) throws Exception
	{
		String[] bindingNameGroup = new String[]{
				"GROUP_SALE_DATE", "GROUP_AMOUNT"
		};
		IBaseExpression[] bindingExprGroup = new IBaseExpression[]{
				new ScriptExpression( "dataSetRow[\"SALE_DATE\"]" ),
				new ScriptExpression( "dataSetRow.AMOUNT" )
		};
		GroupDefinition[] groupDefn = new GroupDefinition[]{
				new GroupDefinition( "group1" ), new GroupDefinition( "group2" )
		};
		groupDefn[0].setKeyExpression( "row.GROUP_SALE_DATE" );
		groupDefn[1].setKeyExpression( "row.GROUP_AMOUNT" );
		String[] bindingNameRow = new String[]{
				"ROW_COUNTRY",
				"ROW_CITY",
				"ROW_SALE_DATE",
				"ROW_AMOUNT"
		};
		IBaseExpression[] bindingExprRow = new IBaseExpression[]{
				new ScriptExpression( "dataSetRow[\"COUNTRY\"]", 0 ),
				new ScriptExpression( "dataSetRow.CITY", 0 ),
				new ScriptExpression( "dataSetRow.SALE_DATE", 0 ),
				new ScriptExpression( "dataSetRow.AMOUNT", 0 )
		};
				
		QueryDefinition queryDefn = this.createQuery( bindingNameGroup,
				bindingExprGroup,
				groupDefn,