override output.elasticsearch.hosts from fileabat.yml

I'm trying to override the filebeat.yml kubernetes deployment configuration for "output.elasticsearch: hosts" but doesn't work and I'm using the filebeat 7.10.2.

I used several env variables:

  env:
    - name: ELASTICSEARCH_URL
      value: 'http://elasticsearch:9200'

  env:
    - name: ELASTICSEARCH_HOSTS
      value: 'http://elasticsearch:9200'

Doesn't override at all.