How to generate index of Prometheus in OpenSearch Dashboard?

Versions (relevant - OpenSearch/Dashboard/Server OS/Browser):

OpenSearch Version: 2.15.0
OpenSearch Dashboard Version: 2.15.0
minikube: v1.28.3
Browser: Firefox , Google Chrome

Describe the issue:

I am using OpenSearch-Dashboard and Prometheus. So in the OpenSearch dashboard i connect a Prometheus with this method :

POST _plugins/_query/_datasources 
{
    "name" : "my_prometheus",
    "connector": "prometheus",
    "properties" : {
        "prometheus.uri" : "http://prometheus-server.default.svc.cluster.local:80"
    }
}

So the Prometheus is connected and get data matrices in the OpenSearch dashboard and the index are also create in MANAGEMENT > INDEXE MANAGEMENT > INDEXES in this INDEXES the index name is “.ql-datasources”.

So i want alerting so i go to the OPEN SEARCHE PLUGGINGS > ALERTING > MONITORS > CREATE MONITOR in this case the dashboard are open for details.

In the CREATE MONITOR dashboard the one detail is “Select data” in this data i choose the index of Prometheus but there are not any “.ql-datasources” index are available in the Select data there are no any another “. …” dot start index name are available.

Configuration:

So how to index are create without dot and all Prometheus data are get in the index and i choose the index in the CREATE MONITOR > “Select data”…

Relevant Logs or Screenshots:

OPEN SEARCHE PLUGGINGS > ALERTING > MONITORS > CREATE MONITOR Dashboard: