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
{
		String[] bindingNameGroup = new String[2];
		bindingNameGroup[0] = "GROUP_COUNTRY";
		bindingNameGroup[1] = "GROUP_CITY";
		IBaseExpression[] bindingExprGroup = new IBaseExpression[2];
		bindingExprGroup[0] = new ScriptExpression( "dataSetRow.COUNTRY" );
		bindingExprGroup[1] = new ScriptExpression( "dataSetRow.CITY" );		
		GroupDefinition[] groupDefn = new GroupDefinition[]{new GroupDefinition( "group0"),
				new GroupDefinition("group1" )};
		groupDefn[0].setKeyExpression( "row.GROUP_COUNTRY" );
		groupDefn[1].setKeyExpression( "row.GROUP_CITY" );
		String[] bindingNameRow = new String[]{
				"ROW_COUNTRY",
				"ROW_CITY",
				"ROW_SALE_DATE",
				"ROW_AMOUNT",
				"ROW_AMOUNT_2",
				"ROW_AMOUNT_3",
				"ROW_AMOUNT_4",
				"ROW_AMOUNT_5",
				"ROW_AMOUNT_6",
				"ROW_AMOUNT_7",
				"ROW_AMOUNT_8",
				"ROW_AMOUNT_9",
				"ROW_AMOUNT_10",
				"ROW_AMOUNT_11",
				"ROW_AMOUNT_12",
				"ROW_AMOUNT_13",
				"ROW_AMOUNT_14",
				"ROW_AMOUNT_15",