>When I have slightly more than 250 items in the combo box, I got an internal error. Is there a limit to the max count of combo items or is there any workaround on this issue? I used SQL as rowsourcetype.
>Thanks in advance!

How are you populating the combo? If you are using a list, there is a limit. BTW, 250 items is probably too many anyway. The user will have difficultly selecting a specific one.