Customize Notification Template

Hi,

I'm trying to amend our notification rule which a technician receives whenever a request is closed. Currently I have the following -

Request [ID:$RequestId] has now been closed. Details of resolution below -

Request title : $Title

Requester name: $RequesterName

Resolution is : $Resolution

Resolved by: $Technician

This currently is setup to go to a distribution group which all technicians will receive.

I want to update this so under $RequesterName is another section called "Last update from the requester is:" along with a variable like: $LastUpdate which contains the most recent reply from the requester on that ticket. I've noticed there are fields such as $LastUpdatedBy and $LastUpdatedTime but nothing that grabs the most recent reply from the requester.

Is this something that can be done? Or is already implemented somewhere?

Thanks,

David