PM when feedback left on profilebook wall ?

Can anybody advise on code that could trigger an Uddeim PM to the original wall writer when feedback is left on a profilebook wall?

I use this if GiftExchange to do a similar job:

// Include for uddeIM API
require_once( JPATH_SITE."/components/com_uddeim/uddeim.api.php" );

//and the message itself
$uddeim = new uddeIMAPI();
$uddeim->sendNewMessage($data, $uid, 'I have sent you a virtual gift - (This is an automatically generated message from Buzz50) - To see the gift that this Buzzer has sent you along with any message click the My Gifts received menu item under the Profiles menu', true, true);

So what I am really asking is where to put this for profile wall updates.

We do not support core edits. So we can not advise you on modifying CB ProfileGallery, sorry. You can find CB ProfileGallery at the below location though.

components/com_comprofiler/plugin/user/plug_cbprofilegallery/