What I meant is if I have 5 column in a grid or table :
column #1 -- Date
Column #2 -- Description
Column #3 -- income
Column #4 -- Expense
Column #5 -- Balance

To count the balance field, usually I do like this :
Select (mytable)
Scan
mrec=RECNO()
SELECT SUM(out-in) FROM (mytable) WHERE RECNO() mbalance=total+in-out
REPLACE balance WITH mbalance
ENDSCAN

THIS Procedure take to long, specially if I edited a record in the middle, so I have to start all over again.

Hope you understand what I'm trying to explain....

Thanks a lot

Senna Dwipayana
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Being better is a bless