Use environment variable RequestAuthentication/AuthorizationPolicy

Is there any way to use environment variables in this file descriptors like this?

apiVersion: security.istio.io/v1beta1
kind: RequestAuthentication
metadata:
  name: my-api
spec:
  selector:
    matchLabels:
      app: my-api
  jwtRules:
  - issuer: ${ISSUER}
    jwksUri: ${JWK_URI}
    forwardOriginalToken: true

You can already do that today. Did you run into any problem?