So I want to fill in a Zoho creator form using Zoho sites. It has to be done in Zoho sites since a custom form has been build using HTML CSS & Javascript and javascript is not allowed in Zoho creator. The idea is that the fields in the custom forms are read, a Zoho Creator form is filled in with the values of the fields and the data is submitted.

The form has an on succesfull submission that gives back a persons profile that is suppossed to trigger as well.

Using the embeded function of Zoho Sites worked when you would only use the Zoho Creator form, but as far as I am aware there is no way to fill in the form using our Custom form and that is a requirement.

I tried doing it with a REST call to Zoho creator but that gives me a " Access to XMLHttpRequest at [creator api] from origin [website] has been blocked by CORS policy: Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' header is present on the requested resource." error. As far as I can figure out the only way to adjust it is with acces to the internals of the Zoho API, so I decided not to pursue this method.

I have ran out of idea's on how to tackle this problem and I hoped there would be someone able to help. If you need clarification on the problem I will do my best to do so.