Automation help - adding a comment with custom field

Question

I have 1 more question.. I am trying to create an automation where it will add a comment to the issue and notifying the peer reviewer.. I am running into a bit of trouble implementing it though.. here is what I have so far:

My issue is I am unable to get the automation to insert the custom field 'Peer Reviewer' in to the add comment section as it just returns the following when an issue is created:

Justin Jones_gmcfp6 · Answer

Bumping this one @Rakesh Kumar

Dean Mullarkey · Answer

Hi Rakesh, unfortunately that didn't work.  Perhaps I will need a plugin of some kind?

Rakesh Kumar_idhtyk · Answer

Hello Dean,

Try using {{issue.Peer Reviewer.displayName}} instead of ${Peer. Reviewer}.

Please put the exact custom field name after ". "

Regards,

Rakesh