if (property!=null)
if (property!=null && property instanceof VDBFieldData)
private void mouseEvent(MouseEvent event, int row, int col){	if ((event.getButton()==MouseEvent.BUTTON3 && col==0))	{		InspectableProperty property = (InspectableProperty)tableModel.getPropertyAt(row);		if (property!=null)		{			int visibility = property.getVisibility();			visibility = (visibility+1) % 3;			((VDBFieldData)property).setVisibility(visibility);						getScrollPaneTable().tableChanged(new TableModelEvent(tableModel, row, row, col));		}	}}