How do I get the Page numbers to automatically apply in a PDF 417 barcode?

I have a form that will be scanned and I need the pdf417 barcode to automatically generate the Page 1 of 12 or whatever the count will be. I have tried using global data with the "Pages" text but that hasn't worked. You can't make a Collection list with the floating fields of CurrentPage and PageCount so could someone please offer a suggestion as to how to accomplish this.

My form has two master pages so I have one of those barcodes on each page. Right now I'm just entering that information manually in the value field but I'm afraid that when the user enters information in a flowed form, those page numbers will be wrong in the scan.

Thanks for any help that can be offered.