Can you use thing 'Attributes' in recipe access control for setting permissions

In the IoT thing policy I am able to set a policy resource to allow the action publish to a topic using the variable:

${iot:Connection.Thing.Attributes[fleetOperator]}

arn:aws:iot:ap-southeast-2:949179323480:topic/Iot/${iot:Connection.Thing.Attributes[fleetOperator]}/${iot:Connection.Thing.ThingName}/*

Is there a way to replicate this in the access control of a recipe? Something similar to the below.

      aws.greengrass.ipc.mqttproxy:
        'test:mqttproxy:1':
          policyDescription: Allows access to everything
          operations:
            - 'aws.greengrass#SubscribeToIoTCore'
            - 'aws.greengrass#PublishToIoTCore'
          resources:
            - 'Iot/{iot:thingName}*'
            - 'Iot/{iot:Connection.Thing.Attributes[fleetOperator]}/{iot:Connection.Thing.ThingName}/*'

Additionally what would be the preferred method to access the thing attributes in a greengrass component - currently I use the aws sdk however need to set the appropriate permissions using the TES, I would prefer to use the IoT credentials if possible.