"Single Risk Found" Notification - Using a list of Computer Names

I am trying to come up with a way to create a single Notification in our SEPM  for "Single Risk Found" to alert on list of 100 different Computer Names.It seems that I can only do this successfully with a single computer name.  However at the top of the box it says:  "What filter settings would you like to use?"     Can I create a custom filter?

The computer names that I would like to have in the alert are not in a dedicated Policy Group, which rules out trying to alert on a Group Name.

I see there is an option to run a batch file, but I don't see how I could necessarily use that for this - unless the batch file can compare the hostname in the Risk Found Event with the list of names.  

Our SEPM is 12.1.4023.4080

Does anyone have any ideas?