>>I figured this out. Change you ERROR metod

>>FUNCTION Error
>>PARAMETER nError,cMethod,nLine
>><b>MESSAGEBOX('ErrorMethod')</b>
>>RETURN TO ShowMessage

and run your code. You wouldn't see ErrorMethod message because COUNT FOR IRegion=lnRegion doesn't generate an error!
>>
>>To confirm it just run COUNT FOR IRegion=lnRegion from command window on any open table.
>>You can use
>
>Yes, you are right. Count doesn't fire up an error. How could that be? I need it to fire on error. Do you know why this VFP function doesn't fire an error? It's amazing to see the reaction of the Count function.

It's not only COUNT. I observe the same behavior with LOCATE and SUM. I would guess that any command with FOR clause works this way.