Mike,

>How was that different from my suggestion to substract from a larger number, the one you said was flawed? But he had a 15 length numeric field, that's why I chose 10^16. Your right that I do need to add str(,23) though.

Did you test the two lines I used to illustrate the problem?

? str(10^16 - 12345678.97) 
? str(10^16 - 12345678.98)

Or how about with smaller, more reasonable numbers (including negative amountdue), and with your suggestion of str(,23):

? str(10^16 - 2.48,23)  = "       9999999999999998"
? str(10^16 - 2.98,23)  = "       9999999999999998"
? str(10^16 - -2.48,23) = "      10000000000000000" 
? str(10^16 - -5.48,23) = "      10000000000000000"

Adding 2 decimal places to the STR command also fails:

? str(10^16 - 2.48,26,2)  = "       9999999999999998.00"
? str(10^16 - 2.98,26,2)  = "       9999999999999998.00"
? str(10^16 - -2.48,26,2) = "      10000000000000000.00" 
? str(10^16 - -5.48,26,2) = "      10000000000000000.00"