"Table data is not editable at this location" in GUI

Hi everyone, I got some trouble to display my table on my GUI. My probleme is that I want display a table cell(1014,5) and add a choice list in each row. I did it like that on GUI:

After that, I obtain:

My choice is display on each row, it works but when I choose a choice , it doesn't appear, and matlab says Table data is not editable at this location:

It don't understand why, because I ticked the box "editable" for the choice list as you can see on the first screenshot

Thank you

Alex

[Walter Roberson]

Posting code that can recreate the problem would help.