Trying to autofill potential using the creator

Hello and thanks in advance for the help, I am new to Zoho but know how to program. I am building a form that uses labels to find 1.a contact (using Zoho CRM label) 2. an item serial number(using the database lookup) 3. and then creating a simple activation code for a product(using a function that returns answer in a label.

Now I want to have the user to create a new potential (that will be set up with a Zoho CRM label) but on creation it autofills the values that have already been input (the contact of the potential is equal to the contact found, etc.).

I cannot find anyway to have this done, any help would be greatly appreciated thank you.