Bug 168808 Display text is lost after launching import values dialog
Steps to reproduce: 1.new a parameter; 2.select list box control type; 3.press "Import Values" button to import some values; 4.assign display texts for the imported values; 5.press "Import Values" button to launch import values dialog again; 6.press ok button on dialog; Expected result: The previous assigned display texts are remained. Actual result: The previous display texts are lost.
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/ui/dialogs/ParameterDialog.java
}
		return null;
	}
	private boolean isEqual( String value1, String value2 )
	{
		Object v1 = null;
		Object v2 = null;
		try
		{
			v1 = getValue( value1 );
			v2 = getValue( value2 );
		}
		catch ( BirtException e )
		{
		}
		if ( v1 == null )
		{
			return v2 == null;
		}
		if ( v1 instanceof Double && v2 instanceof Double )
		{
			return ( (Double) v1 ).compareTo( (Double) v2 ) == 0;
		}
		if ( v1 instanceof BigDecimal && v2 instanceof BigDecimal )
		{
			return ( (BigDecimal) v1 ).compareTo( (BigDecimal) v2 ) == 0;
		}
		if ( v1 instanceof Integer && v2 instanceof Integer )
		{
			return ( (Integer) v1 ).compareTo( (Integer) v2 ) == 0;