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
} );
		
		createDefaultEditor( );
		createLabel( valueArea, null );
		createPromptLine( valueArea );
		listLimit.setEditable( true );
	}
	private void createDefaultEditor( )
	{
		createLabel( valueArea, LABEL_DEFAULT_VALUE );
		defaultValueEditor = new Text( valueArea, SWT.BORDER );
		defaultValueEditor.setLayoutData( new GridData( GridData.FILL_HORIZONTAL ) );
		defaultValueEditor.addModifyListener( new ModifyListener( ) {
			public void modifyText( ModifyEvent e )
			{
				changeDefaultValue( UIUtil.convertToModelString( defaultValueEditor.getText( ),
						false ) );
				if ( isStatic( ) )
				{
					refreshValueTable( );
				}
			}
		} );
	}
	private void createPromptLine( Composite parent )
	{
		promptMessageLine = new Label( parent, SWT.NONE );
		promptMessageLine.setLayoutData( new GridData( GridData.FILL_HORIZONTAL ) );
	}
	protected void okPressed( )