8bc1bc09_Paymate___Sell_on_your_Website__Parameter_Description
[Parameter Name] return (4) [Parameter Description] 
A fully-qualified (eg: http://www.yoursite.com/paymentreceived.asp) URL to which Paymate will redirect the buyer. This redirect will occur when they click the continue button on the receipt page of the Express Payment wizard.
Paymate - Sell on your Website
Parameter Description