I'm looking for away to sum fields from the parent page with a spawned page in Acrobat Pro XI.

When I use the calculate "Sum" feature it does not apply the prefix when spawned. I would like my Total to end up on the last page at the bottom. I'm not sure if I need to create a script using "var =" or something totally different, I have 20 fields on spawned page and I'll need to get the subtotal from parent page to add to total of spawned page.

Greatly Appreciate Any Help