email notification during a resource check

Hello!
Is it possible to get an email notification during a resource check, especially a file content check? I have already read and setup the article www.site24x7.com/community/resouce-check-profile-trouble-or-down-alerts, but unfortunately I don't get a notification. The status changes from Available to Unavailable. If the status is Unavailable, I would like an email notification.

Status History of resource check