Mike,

>>2) Company C(05) Ascending
>> AccountCode C(05) Ascending
>> DueAmount N(15,2) Descending
>
>I see, set the expresion to COMPANY + ACCOUNTCODE + STR(10^16 - DUEAMOUNT) or something close to that. You can do that date the same way.

I see problems with that approach. See what happens with these numbers:

? str(10^16 - 12345678.97)
? str(10^16 - 12345678.98)<pre>I'd suggest this:<pre>COMPANY + ACCOUNTCODE + STR(0 - dueamount, 15, 2)