I am trying to create a form that members can add info to their existing data fields in a collection. When a member signs up, I want them to be able to update their profile information that is stored in a database. I want to add another collection of data that has a list of products that they carry. How do I reference their ID from the User Profile Database to the Products database, so they can add products to their own Profile. I do not know how to write the code to reference their UserId from the backend to add to the Product Database. Please help. I've been trying to figure this out for over a week. Any assistance would be fantastic!
Please see my screenshot of the form I created below.