Bug 113938 Report is marked dirty when open/close cascading parameter dialog without doing any operation on it
description: Report is marked dirty when open/close cascading parameter dialog without doing any operation on it steps to reproduce: 1.new a cascading parameter group 2.save the reprot 3.double click the cascading parameter to bring out edit box 4.click OK to close edit box actual result: Report has been marked dirty expected result: No dirty marked for that no operations done in edit parameter dialog
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/ui/dialogs/ParameterDialog.java
if ( formatString != null )
		{
			return formatString.split( ":" )[0]; 
		}
		return null;
	}
	private String getPattern( String formatString )
	{
		if ( formatString != null )
		{
			int index = formatString.indexOf( ':' ); 
			if ( index == -1 )
			{
				return null;
			}
			return formatString.substring( index + 1 );
		}
		return null;
	}
	private boolean containValue( SelectionChoice selectedChoice,
			String newValue, String property )
	{
		for ( Iterator iter = choiceList.iterator( ); iter.hasNext( ); )
		{
			SelectionChoice choice = (SelectionChoice) iter.next( );
			if ( !choice.equals( selectedChoice ) )
			{
				String value = null;
				if ( COLUMN_VALUE.equals( property ) )
				{