Could you please provide more info? What Collections do you have and what relations are there? What is the general idea of this part of the app?
Also: in order to update the record in some collection on a screen, you need to have an access to this record at this screen.
Example: you have a collection of Books. Each Book has Author (User) and Comment. You can’t just arbitrarily change the Comment for some book. In order to allow Logged-In user to change the Comment for the book, you need to:
- create a list of Books (for example, on BookOverview screen)
- set up a link to another screen (BookDetails) - add a button to the list and add an action to it
- and on this BookDetails screen, you will have an access to Comment value for this particular book.
Would you be able to change Author’s details for this book - that depends on the type of the relation.
There is a workaround/hint, how to access a particular record in a collection, which is called “Single Item List”. In the example above, this will be a list of Books, filtered by some unique ID (say, Name). Filter is usually formed based on other information. And in this list you have the access to the data of this particular book.
Best regards, Victor.