>Cetin,
>
>I put back the THSFORM.txtProductID.SetFocus() in the grdProduction.AfterRowColChange() and got the following error message oce again:
>
>"Cannot call SetFocus from within a When, Valid, RangeHigh or RangeLow event"
>"Cancel, Ignore, Hep"
>
>Thanks...

Oh it's not related with ARCC directly. You're in the valid of a control (probably the textbox has a valid code).
PS:Suspend and in debugger check the stack for the calling valid procedure.

Cetin