what is your data?
How do you know how to read a transaction in or a transaction out.
basically you want to create one formual field to flip each row between a postive or negative value
if field=transaction_in then amountfield else (amountfield *(-1))
then do an insert summary (sigma sign) as a SUM of this fomrual field
set in the groujp footer
once you do that (should be the same suma syour current formula) the group Sort expert will no longer be greyed out and you can sort all groups on that SUM
Edited by DBlank - 26 Jul 2010 at 12:03pm