1.         link = "https://creator.zoho.com/zoho_mikis/rangitane-beneficiary-database/#Form:Registrant_survey?Registrant_Email=" + recSurv.ID + "&Registered_with=" + recSurv.I_wish_to_register_with;

That worked well, however it's Public that needs to access this form, so I published the form, which gives me the URL with the long public code. I added the same fields to it, but that does not seem te be passed on. The first one not at all, the second field (I_wish_to_register_with) passes on only the first word??

1.   link = "https://creator.zohopublic.com/zoho_mikis/rangitane-beneficiary-database/form-perma/Beneficiary_survey/88DpfP6FhREBWQJhRprkwbHHeaqz4x4KMqUthzFNTxdu45kfdNRJHqbwCvP7Mh73C5SSOJAkPafVBZ5H7nDGqS1eTsMYK9pKP7OJ?Registrant_Email=" + recSurv.ID + "&Registered_with=" + recSurv.I_wish_to_register_with;