How to Integrate Quality Campus?

I am using the PayPal Standard and I need to be able to dynamically change the notify link. I saw on this thread ( www.hikashop.com/en/forum/4-how-to/9552-...-products.html#88077 ) that it is possible to do that, but I need to be able to have this syntax:
ssdsi.qualitycampus.com/ipn.asp?id=36^1

36 is the product model number and the 1 is the quantity ordered.

Any pointers?

Hi,

You can change the Notify url in the PayPal plugin to add at the end of this one $product_id.'^'.$quantity