If you are able to do the set_window to the popup window, then definitey you will able to access the data from the popup window.
As you are saying you are ablt to see the row / col in the spy, so you definitely be able to get the data from the row / col. Unless it does not recronize the object / it does not display object name or object name is " "(Blank).
If you want a high quality software system, you must ensure each of its parts is of high quality. by Watts S. Humphrey