Connect to a GIft Registry website using their API

I have a rush job that I need to be done by tomorrow....I need to integrate the following **THIS IS A SIMPLE ONE DAY JOB....or a few minutes for some or few hours for those who do not know my ecommerce system well....you need to know panels and snippets... I would like to connect my site using the API on [login to view URL] In my ecommerce system using their API.....I already started to work on it and everything is working except the ADD TO CART part.... In their tutorial instructions, they stated under the section "IF YOUR PAGES ARE DYNAMICALLY GENERATED" how I should configure the ADD TO CART area but I keep getting error ONLY for this part....everything else is working great. I just don't know what variable need to encode or decode in the form field so the ADD TO CART will work.... The tutorial is located at: [login to view URL] Let's talk if you can do this in ONE DAY or less...