Variable $NoteMadeBy is not functioning in subject line

Variable $NoteMadeBy is not functioning in subject line

I'm on the template "E-mail technician when note attached to a Request."  The default subject is "A note has been added to Request Id ##$RequestId##", I'm attempting to change that to "$NoteMadeBy added a note to RequestID #$RequestId".  When I get the email however it's not replacing $NoteMadeBy with the value.
 
Any ideas?

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