{
             if (note.getNotifier() == mappingRoot &&
                   (note.getFeature() == MappingPackage.eINSTANCE.getMapping_Outputs() 
                   || note.getFeature() == MappingPackage.eINSTANCE.getMapping_Inputs()))
             {
               rightSelectionViewer.setInput(new ItemProvider(mappingRoot.getBottoms()));
             }
             else
             {
               super.notifyChanged(note);
             }
           }