Hi I'm looking for help regarding some Firestore rules.

For some reason wildcards don't seem to work, or I'm doing something wrong...

Basically I'm trying to only allow 'read' permissions on a document collection if the companyId exists in their own user document.

So for example, I have a collection called "companies/16bc5ecc247a9". In my user document I have a field of companyId: "16bc5ecc247a9".

So, If companyId: "16bc5ecc247a9" matches a collection inside another collection called 'companies' it'll grant permission

Here are the rules I'm using:

match /companies/{companyName}  {

      function comp() {
        return get(/databases/$(database)/documents/users/$(request.auth.uid)).data.companyId == companyName;
      }
      
    allow read, write : if comp()      
}

So as you can see I'm trying to say if the document name matches the value inside the user field allow

Here is a screenshot of my data

If it's needed, Here is all of my rules I'm using

I hope this make sense, Thanks in advance.