Yes, that's what I'd like to do, but the nature of the document has the invoice sum at the top of the document not the bottom. When I move the sum to be at the top, it can't find the amount field, I think I saw elsewhere that the formula has to appear after the field it's referencing. Per the standard of the document, I need it at the top. Is there anyway around that?
My only other thoughts, were to write something that read through the JSON object and put the summations in where I needed them.
Thank you for the very quick reply!