vinchacho,
As a general rule, you don't. Given that you have saved the elements of
the calculation, you can always re-calculate the the column, "on the fly",
in any subsequent form, query, or report.
If you must save the calculation... (for example Price * Qty = Line
Total)
Add a field to your table called LineTotal. Place that field on your
form. When either Price or Qty have been entered, and using the AfterUpdate
of either field...
Private Sub Price_AfterUpdate()
LineTotal = Price * Qty
End Sub
(use the same code for Qty AfterUpdate)
That will save the results to the LineTotal field.
--
hth
Al Campagna
Microsoft Access MVP
http://home.comcast.net/~cccsolutions/index.html
"Find a job that you love... and you'll never work a day in your life."
Al Campagna