MX Merchant Ideas

It's frequently desirable to pass a piece of data to the payment page and then have that returned along with the refCode, authCode, etc. For example, I might have my own payment or customer id in my system that I need to track. Your customized field option allows for that, but since it can't be disabled or hidden, it does not provide a safe mechanism to do so. Since you already allow customized fields, it shouldn't take much to provide the option to make it hidden.