Strange combobox behavior

[AccessKid]

I have a form with a subform which contains a combobox in one of its fields. What's buggin me about this subform is that when I enter two records in it, successively, the first record seems to save without problem, but the second one will not allow me to select any item from the combobox. The combo displays the choices but when I select one, nothing happens and the field remains empty.

Note: just now I discovered that the combobox "locked" property turns to TRUE for the succeeding record, thus the uneditability. I'm still trying to find out what made it so.

 

[AccessKid]

Forget about this. Using a watch variable to catch when the Locked property change to True from the normal False, I finally caught the culprit: actually a line of code that forcibly change the property .