Editing reply notification email template

Hey guys
This is something that has bugged me for a while now, I've looked around, but can't seem to find an answer
I've noticed that when i received topic reply notification emails, it starts with "Hello , bla bla bla". What I'd really like is for the username in question to go just before the comma, which it seems like it's trying to do
I'm just not sure why it's blank like this

Any help would be appreciated!

Please post where this is at here https://help.forumotion.com/t91017-grammar-errors so I can keep track of what is fixed and what isn't.