Hello and good evening. I am using jam affiliate manager along with paypal buttons. I have another piece of software using paypal IPN. On November 16 I was told by your support the following: "if that program uses the notify_url field, you can still make it work, but JAM will have to be able to use the 'custom' field. you will then have to custom code their IPN URL and add some JAM code there for JAM to trigger commissions." I have yet to receive a response back and would like to know how to implement jam and this other solution. How do I specify the custom url?