Bug 312859 The list of operator for Chart filter does not provide 30 visible items
chart/org.eclipse.birt.chart.reportitem.ui/src/org/eclipse/birt/chart/reportitem/ui/dialogs/ChartCubeFilterConditionBuilder.java
}
		else if ( valueVisible == 1 )
		{
			expressionValue1.setVisible( true );
			expressionValue2.setVisible( false );
			andLable.setVisible( false );
		}
		else if ( valueVisible == 2 )
		{
			expressionValue1.setVisible( true );
			expressionValue2.setVisible( true );;
			andLable.setVisible( true );
			andLable.setEnabled( true );
		}
		else if ( valueVisible == 3 )
		{
			if ( expression.getText( ).length( ) == 0 )
			{
				valueListComposite.setEnabled( false );
			}
			else
			{
				valueListComposite.setEnabled( true );
			}
		}
	}
	protected void editValue( Control control )
	{
		String initValue = null;
		if ( control instanceof Text )