Ok...here is the problem...I have a report that gives the invoice amount by multiplying the qty_shipped by unit_price. This is done for each customer order, and what I would like to do is total all the invoice amounts for a customer. This seemed easy enough, but when I add a subtotal using the invoice amount formula, it gives me really high numbers, almost like it's adding all invoices from all customers. I can find a pattern to the totals, so any help would be appreciated!