Bug 146159 [Regression]Changing font operation doesn't work other than the first time
Description: The first time changing operation can work well. However, Change it again, it won't work. Steps: 1.Insert lable/text to layout or master page 2.Change the font from serif to cursive, it works well 3.Change the font again Result: The action doesn't work Additional infor: build number:200606080632
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/ui/dialogs/HighlightRuleBuilder.java
value2.addModifyListener( new ModifyListener( ) {
			public void modifyText( ModifyEvent e )
			{
				updateButtons( );
			}
		} );
		value2.setVisible( false );
		valBuilder2 = new Button( condition, SWT.PUSH );
		valBuilder2.setText( "..." ); 
		gdata = new GridData( );
		gdata.heightHint = 20;
		gdata.widthHint = 20;
		valBuilder2.setLayoutData( gdata );
		valBuilder2.setToolTipText( Messages.getString( "HighlightRuleBuilderDialog.tooltip.ExpBuilder" ) ); 
		valBuilder2.addSelectionListener( new SelectionAdapter( ) {
			public void widgetSelected( SelectionEvent e )
			{
				editValue( value2 );
			}
		} );
		valBuilder2.setVisible( false );
		if ( operator.getItemCount( ) > 0 )
		{
			operator.select( 0 );
		}
		lb = new Label( innerParent, SWT.NONE );
		lb.setText( Messages.getString( "HighlightRuleBuilderDialog.text.Format" ) ); 
		Composite format = new Composite( innerParent, SWT.NONE );
		format.setLayoutData( new GridData( GridData.FILL_HORIZONTAL ) );
		glayout = new GridLayout( 7, false );