azure Activity log Alert error

Hi,

I am trying create custom Activity Log log alert for "Resource Health" of a VM using ARM Template, following the below link..

 
Ref: https://docs.microsoft.com/en-us/azure/service-health/resource-health-alert-arm-template-guide
Error: Alerts are unable to fire

I want Activity Log Alerts triggered with an Email every time the Resource health of a VM goes from "Available" to "Unavailable".

Kindly Help me out with this.

Thanks.