if ( getRequest( ).getNewObjectType( ) instanceof DataSetItemModel )
if ( getRequest( ).getNewObjectType( ) instanceof DataSetItemModel || getRequest( ).getNewObjectType( ) instanceof ResultSetColumnHandle )
		public boolean preHandleMouseUp( )		{			if ( getRequest( ).getNewObjectType( ) instanceof DataSetItemModel )			{				try				{					Object newHandle = InsertInLayoutUtil.performInsert( getRequest( ).getNewObject( ),							getTargetEditPart( ) );					if ( newHandle == null )						return false;					setModel( newHandle );					return super.preHandleMouseUp( );				}				catch ( SemanticException e )				{					ExceptionHandler.handle( e );				}			}			return false;		}