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
it.next( );
		testFindGroup( it, new Object[]{
			"CHINA"
		}, 8 );
		testFindGroup( it, new Object[]{
				"CHINA", "100"
		}, 8 );
		testFindGroup( it, new Object[]{
				"CHINA", new Integer( 100 )
		}, 8 );
		testFindGroup( it, new Object[]{
				"CHINA", "400"
		}, 6 );
		
		try
		{
			testFindGroup( it, new Object[]{
					"CHINA", "abc"
			}, 6 );
			fail( "Should convert fails" );
		}
		catch ( BirtException e )
		{
			System.out.println( e.getLocalizedMessage( ) );
		}
	}
	
	/**
	 * 
	 */