Invoice Template with Payment Stub

I am working on creating an invoice template through XML publisher to send to customers.  The business would like a payment stub included on the invoice at the bottom of the page.  I can get this to work fine, but the stub repeats on every page.  I only want it to show on the last page.  Some invoices will only be one page and some will be more than one.  It just needs to show on the last page of the document (or first page if there is only one page).  I have found where you can add in field