zigbeeCrashed / zigbeeOff location event

Hi

Recently, I have experienced my Zigbee network going offline every few days. When this occurs, I see zigbeeOff messages in my System Events log. I would like to be able to create a trigger in Rule Manager based on this.

I see in the Location capability that there is a zwaveCrashed event that can be used as a trigger in Rule Manager. I'm just asking for essentially the same thing for Zigbee.

Thanks...