Closing Balance needed

Question

Dear All,
I have an requirement for getting the closing balance as running total. Means I have the following fields as
Debit      Credit   Balance ( Not there but want a calculation or formula from crystal reports )
100        0          100
200        0          300
0            50        250
0            100      150
500        0          650
Basically I want a closing Balance field. How to achieve please advise
Regards,
Depika

Answer 1

Are you using a running total, or a sum?  Are the options for the running total set correctly (in particular when it is reset to zero)?
Anyway, you can do this with global variables as well (basic syntax):
global balance as number
if PreviousValue({group field}) <> {group field} then
  balance = 0
end if
balance = balance + {debit} - {credit}
formula = balance
Where {group field} is whatever field you need to trigger a reset of the balance.  Put this field where you ant the balance displayed.
HTH,
Carl