Prefill a hidden field from the embedded form code on an external website
I have a form embedded on an external website and would like to set a variable/hidden field on form submission. I have a custom field already setup for a contact. In short, upon submission I want this field prefilled by a variable I'm setting at the embed code. The embed code is static so I'll be able to add the variable per instance. Basically I want to create my own version of the pageID variable used internally on HS landing pages. Any ideas how I can accomplish this?
@hubspot I don't see any reason why hidden fields should be blocked for external pages?! You don't expect that. And it is nowhere documented. It is definitely an exclusion criterion against using hubspot.