Adding to separate data types

First time bubble users and we’d love some help.

We are working on a family app that involves groups (families) and individual users (parents) as well as records for child (database record, not a user with email).

We are creating the onboarding process and having trouble linking the child to the family.

We have created the following in the db:

  • Family - Data Type
  • Users - Amended existing Data Type
  • Child - Data Type

What is the best way to set this up in workflows so we are linking the right data? Right now we are trying workflow ‘Create a New Child’ & then change the family record to add unique ID for child but it’s not working.

Thanks in advance

Assuming your Children field is a list of type Child, you don’t add the unique ID (which is a text), you add the Child itself (which is a Child).