Lelynx (12) [Avatar] Offline

I'm using objviewer.ObjectViewer to display object properties in a window.
But I've got an object with 20 properties, and changed objviewer.ObjectViewer to display them in 4 columns. Works well, until I try to edit a single data. Then the event handler objviewer.PropertyViewer.editSimpleProperty does not know which of the two data cells of the line fired the event! The this object will not carry this info.
How would you do that?(create a specific object for each group of data in the same line?)