Hi Sergey

>It's called SPT for a reason.

:)

>Whatever you specify as 2nd parameter in SQLEXEC() is passed to a backend for excution w/o changes. IOW, you call SP the same way as you would in the backend.

I have checked out on the FireBird forum and it is supposed to be called as follows:

EXECUTE PROCEDURE DelUStock(OLD.iID)
returning_values(:returnvalue);

Thanks.