How to override values.yaml from parent chart in Helm

I am trying to install rabbitmq helm chart in dependencies section of my parent chart. Here is my parent chart

apiVersion: v2
name: mychart
description: A Helm chart to install rabbitmq
type: application
version: 1.0.0
appVersion: "1.0.0"
dependencies:
  - name: rabbitmq
    repository: https://charts.bitnami.com/bitnami
    version: 8.11.9
    condition: rabbitmq.enabled

And here is the values.yml file of this chart

rabbitmq:
  enabled: true
  auth.username: test
  auth.password: test

I am trying to override the values of auth.username and auth.password of rabbitmq dependency chart. But values are getting override. And default values are used when I deploy/test this chart.

What am I doing wrong here ?

Solution

While the helm install --set option takes options like --set rabbitmq.auth.username=..., and charts' documentation generally uses this syntax, in YAML files you need to put each part in a nested block:

rabbitmq:
  enabled: true
  auth:
    # "username" under "auth", not a single key "auth.username"
    username: test
    password: test