Need help with Admin ticket notification on admin reply

[Airborne3D]

Hello, 

I have been looking around for a solution for whmcs to send out emails on admin ticket replies to other admins then the responder. This have been posted on many threads but doesn't seems to be solved or explained.

It seems that this can be done with the TicketAdminReply hook but i have no clue how to do this. Any sort of help is greatly appreciated.

<?php
add_hook('TicketAdminReply', 1, function($vars) {
    // Perform hook code here...
});