RE - Store Multiple Device References in a Variable

The ability to store device names in a variable, filtered by a condition (i.e. offline) would allow for notifications pertaining to devices that have a particular status. I’m presently doing this in webCore (soon to be deprecated in SmartThings) to check on a daily basis for offline devices and send a notification.

This is an example in webCore of what I’m looking to do in the Rule Engine,

@josh best summed up the concept in this post.