>Thank a lot for your reply; I wonder if you make your explication more extends; because my english is not so good thant yours.
>
>What do you mean with DOEVENTS and AutoFiel Properties?

Don't worry, your English is much better than my Spanish ;) You can check VFP Help for what these do.

For AutoYield, I think you will probably need it set .T., you need to check that it actually is .T. while your code is running.

DOEVENTS can be helpful if you're running code in a loop e.g.

* BEFORE:
SCAN ALL
  ProcessOneRow()

ENDSCAN

* AFTER:
SCAN ALL
  ProcessOneRow()

  DOEVENTS
  * Above effectively yields the processor for other tasks

ENDSCAN