Zlatko ---

Jim and Vlad had excellent ideas, but there is another idea to consider: If you are using VFP6 consider adding Value_Assign events to the controls that have data that may be changed and having them point to a Recalc method. No mess, no fuss.

If you're using VFP5, consider putting a call to a Recalc method in the InteractiveChange events of the integral controls.

>I put "on key label F5" in the Load method of my form. Well, it seems to work OK, but there is a problem. If I want to do some action and recalculate some values on my form, I'd like to refresh them what works proprely with ThisForm.object.refresh().
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>The problem is that "on key labels" works outside this form and I tried with a sub-program: ON KEY LABEL F5 DO subpr.prg, but from there I can't refresh objects on my form using ThisForm.object.refresh(). So, I tried directly with Form1.Object.Refresh ("Form1" is the name of my form), but then I received an error "Object Form1 not found".
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>What am I doing wrong? How could objects be refresh from an external program, not directly from own methods of form?
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>Thanks a lot, Zlatko.