Hi Jana,
Let me get this straight.
Are you saying :
1. On the UI, after loading let's say the Value in combo is "Waiting List"
2. User change the value on this combo to "Selected". The Value in the UI changed into Selected.
3. User Update the form. Your addon write this value into Database. You can confirm the data is updated using SQL query.
4. User reopen the form, and on the UI, this combobox value revert back to "Waiting List" ?
Am I getting you correctly ?
Regards
Edy