configuring helmchart with s3 repo

Hello I would like to use the helm-controller with my helm repo on s3, I don't have see any configuration in the page. I need the s3 helm plugin installed and a HelmChart like this?

```apiVersion: helm.kubedex.com/v1
kind: HelmChart
metadata:
  name: test-s3
  namespace: default
spec:
  chart: chart-name
  repo: s3://url-of-the-bucket
  version: 1.0.0
  valuesContent: |-
```

Thanks