the runner-registration-token of `Secret` type yarml of Gitlab-runner in k8s is not correct

Summary

I follow https://docs.gitlab.com/runner/install/kubernetes.html to deploy gitlab-runner in k8s and success, but the runner does not register to my repository. I check the Secret yaml shown above, and the runner-registration-token is not the one i provide in values.yaml.

Why is that?

Use Chart v0.17.1, APP version 13.0.1