>Well cathy, thanks for fast replay the problem I want to get the deffrent between the debit and credit side and if the deffrent is more than 0 it should save it in variable called debitbalance and if it less than 0 it should save it in variable called creditbalance and I was using IIF() but it is not working good, so I feel there is something which is missing for example
>you have a table with 2 fields one is debit and the other is credit
>when you you want to get the balance for both of them I need to say
>debit-credit=value
>if value>0 then debitbalance=value else creditvalue=value endif
>
>so in the report you can't write such thing so I have to use IIF(debit-credit>0,debit-credit,0) and IIF(credit-debit>0,credit-debit,0)
>shall I use the result of IIF() in anther report variable. ??
>

Why not try MAX(credit-debit,0) and MAX(debit-credit,0) for the two variables respectively?