Is your check box bound to a controlsource? When you mention the interactivechange, do you mean that you are changing the value of the checkbox in the event? If so, then what you might be needing after you change the value programmatically is a call to the control's refresh().

>Hi All,
> I just found out something and I was wondering if anyone else had similar experiences or could tell me why this is happening.
>
>I am converting a project from VFP 3.0b to 6.0 (sp3). In it I have a class based on a checkbox with some code in the interactivechange event. When I would click on the checkbox, the check would not show up. What I need to do to fix the problem is to set lockscreen before processing the code in the interactivechange and reset it afterwards. Is this feature by design or is something else happening. Any thoughts would be appreciated.
>
>Bob