On main form i m using two subforms. On both subforms i m using fields to get sum of amount using sum function n then using these sum amounts on main form for few more calculations. As i update amount fields on subforms, the fields that show the sum of amount goes blank n bcoz of this other fields using tht sum values on main form show wrong values unless i close n reopen form again. I used the requery method as well but nothing is working. Can someone help me in this regard? Thnx