how to do a Cumulative sum by row?

i have 2 fields that is debit ,credit i want to display it with 3rd field balance that is =sum(debit-credit)
e.g.

debit credit balance
500 0 500
0 150 350
200 0 550
0 600 -50
how can i do that?

Comments

  • gordkgordk St.Catherines On. Canada.
    edited 7:23PM
    in the third memothird memo
    [(<datsetname."fieldname"> - <datsetname."fieldname">)]

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