Hey 👋 , I have been evaluating the tool today - looks really cool! One basic question: when using the principal attributes as a condition expression I can't get the "in" operator to work? here is the code:

---
apiVersion: api.cerbos.dev/v1
resourcePolicy:
  resource: album
  version: default
  rules:
    - actions: ['view']
      effect: EFFECT_ALLOW
      roles:
        - editor
      condition:
        match:
          expr: 'test' in request.principal.attr.products

and response

failed to convert YAML to JSON: yaml: line 12: did not find expected key

Hey, There is an issue with using

'

at the start of an expression - you can break out onto a new line as follows which works

---
apiVersion: api.cerbos.dev/v1
resourcePolicy:
  resource: album
  version: default
  rules:
    - actions: ['view']
      effect: EFFECT_ALLOW
      roles:
        - editor
      condition:
        match:
          expr: >
            'test' in request.principal.attr.products

ah great - thanks for the quick response