Purchase order number in PDF invoice

[george1]

Hi all

Could anyone please tell me how to add purchase order number to invoice PDF.

I've installed PDF invoice contrib http://www.oscommerce.com/community/contri...rch,invoice+pdf

and Purchase Orders 1.4.1

They all work very well. The only problem is that the payment method shown on invoice PDF is just "purchase order". I want the PO number to be on invoice as well.

I assume just a few lines of code would do the job.

many thanks