How to use response functions in Hosted Payment Form in Chase Paymentech?

Question

I am currently working on chase payment gateway integration with php. It has very bad documentation which does not shows how to use response functions on merchant parent page. I am using hosted payment form (HPF) in chase payementech. On the merchant parent page, I have response functions and iframe which contains hosted payment form. Here I don't know how to use response functions like

cancelCREPayment() 
whatCVV2() 
creHandleErrors(errorCode)
creHandleDetailErrors(errorCode, gatewayCode, gatewayMessage)
completeCREPayment(transaction) 

on the merchant parent page. I have submitted callback_url, css_url etc at the admin panel.

Answer 1

Is this resolved? If not, What do you have in your callback_url? chase paymenttech website documentation section provides a sample callback.html file which has the actual implementation for these methods. You can override those in your iFrame html page.