How can I pass values to airflow pods from kubernetes secrets?

[LyKos4]

I have tried adding
secret:

• envName: "SECRET_NAME"
  secretName: "my-airflow-k8s-secret"
  secretKey: "SECRET_NAME"

  as per https://airflow.apache.org/docs/helm-chart/stable/adding-connections-and-variables.html

in values.yml but the airflow pods didn't get the value.
How can I pass values from kubernetes secrets?