Query issue

Im trying to build a query that loads the document users/{currentUserUid}/days/{yyyy-MM-dd} on my DayOverview page.

Doc type chosen in the dialog:

• Query Type: Document from Reference

• Collection: days

• Query Type inside box: Single Document

According to the docs ( https://docs.flutterflow.io/resources/backend-query/document-from-reference ) you should:

1. put a parent reference that points to the current user (users/{uid})

2. set the Document Id to today’s date.
   
   What actually happens

   • In the “users Reference (Optional)” UNSET field I open Set Variable.

   • I do see Authenticated User in the list, but only scalar values (Email, User ID, …).
     User ID is greyed out because the field expects a DocumentReference, not a string.

   • If I try entering raw code like

     Copy

     FirebaseFirestore.instance.doc('users/' + currentUserUid)

     the field stays red with “type mismatch”.

   Result: I cannot give the query a valid parent reference.