cujo

I am trying to setup integration with an affiliate program. I'm sending an XHR to the affiliate on order confirmation (using the code-injection tool), but I can't figure out what the SquareSpace variable is to get the discount code. I need to include this in the JSON I'm sending. Does anyone know what that variable is called? What I have already is below. I've tested it with hardcoded data to confirm that it does work correctly, but I need to know what that "coupon" variable is on the SquareSpace side. <script type="text/javascript"> let request = new XMLHttpRequest; request.open("POST", "AFFILIATE_LINK"); request.setRequestHeader('Api-Key', 'APIKEY'); request.setRequestHeader('Content-Type', 'application/json'); request.send(JSON.stringify({ "coupon": promoCodeThatINeedFromSquareSpace, "amount": {orderSubtotal}, "customer_id": {customerEmailAddress}, "external_id": {orderID} })); </script> Thanks in advance for any help!