Gaylen, I don't know if the previous suggestions worked.

If they didn't, then I have another suggestion. i.e. put something into the valid event for each of the four columns. e.g. thisform.mygrid.balance = thisform.mygrid.purchases - thisform.mygrid.payments - thisform.mygrid.whatever (follow this by) thisform.mygrid.balance.refresh().

I think this should work.

Mike Smith