Help please. I created a Buy Now button for my website. However, (1) I need to know how to send an Invoice number in the "invoice" variable to PayPal. (2) I also need to know how to receive some form of confirmation back from PayPal when the transaction is processed. For example, when my customer clicks my "Buy Now" button on my webpage, they get redirected to PayPal. I need to include "an invoice number (ie..13-10050) " so that I can track the purchase. After PayPal processes the transaction, the customer is re-directed to a "confirmation.aspx" page located on my website. I need to grab something back from PayPal so that I know the transaction was processed. Questions: 1. How do I pass an invoice number in the invoice variable on the Buy Now button? 2. How do I collect a response from PayPal when the customer is redirected to my "confirmation.aspx" webpage?
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