I don't recall seeing this before... I created a new Node Custom Property, saved it and added values for a Node.
Next I created a new Alert Rule and used the new Custom Property in the Trigger Condition. Alert Manager found the new Custom Property as well as the values I have set on Nodes.
But here is where it gets odd... When I go to Actions and select Email, I cannot access that same new Custom Property either using the "INSERT VARIABLE" feature or by adding it manually using ${N=SwisEntity;M=CustomProperties.<CP Name>}.
I would chalk this up to Monday but I started working on this late last week. So what am I missing folks...?