I tried it and Form A does not see changes made by form B. The program uses code like (in the valid event) of
the text box.

IF ThisForm.lNewSlip AND This.Value > instock.nqty ;
AND instock.nmaxlev <> 0
code for messages
ENDIF

How do I get updated value of instock.nqty (i.e. when it is updated by a different form by the current or a differnt user).
Form for maitiaining inventory data is logically independent of orders form. Since it is not a view requery does not
seem appropriate. Is it some variant of tableupdate (but this form did not update the inventory table), or is some
variant of the refresh event (if so what).