k8s-sidecar-target-directory: <foldername> doesn't work as expected

[ChinthapalliNikhithaChandana]

I'm using kube-prometheus-stack helm chart to deploy grafana. I have the sidecar enabled. I'm plannning to store the grfana dashboards in a folder.

grafana configuration:

sidecar:
dashboards:
provider:
foldersFromFilesStructure: true

Dashboard configmap

kind: ConfigMap
apiVersion: v1
metadata:
name: prometheus-alerts
labels:
grafana_dashboard: "1"
annotations:
k8s-sidecar-target-directory: "folder-name"

Here the k8s-sidecar-target-directory annotation creates a folder, but it cannot accomodate multiple dashboards, Can you help me figure out where it's going wrong?