Grafana dashboard persistance

Hy, i have followed the same method like the above adding a configmap in the same namespace of the json file but the dashboard is not persisting even though
Added the dashboard json data in config map even though dashoard is not persistaing when i try to restart the pod dashboard is deleting.
what might be the issue ?
added this in values.yaml

dashboardProviders:
dashboardproviders.yaml:
apiVersion: 1
providers:
- name: ‘default’
orgId: 1
folder: ‘’
type: file
disableDeletion: true
editable: true
options:
path: /var/lib/grafana/dashboards/default
dashboards:
default: “grafana-dashboards”