Easy Profile - Joomla Extension

I've tried adding the custom fields in \components\com_users\models\registration.php

<?php



defined('_JEXEC') or die;



class PlgJsnSkeleton extends JPlugin

{

	public function triggerProfileUpdate($user, $data, $changed, $isNew)

	{

		if($isNew)

		{

			$body=$user->name." updated user profile. \n\n";

			foreach($changed as $fieldalias){

				$body.=$fieldalias .": ". $data[$fieldalias] ."\n"; 

			}

            $config = JFactory::getConfig();

			$result=JFactory::getMailer()->sendMail(

				$config->get( 'mailfrom' ), // Sender Mail

                $config->get( 'fromname' ), // Sender Name

				'admin1@email.com', // Receiver Mail

				'New User', // Subject Mail

				$body // Body Mail

			);

		}

	}

}

$data['sitename'],

$data['name'],

$data['email'],

$data['username'],

JsnHelper::getUser($user->id)->city_name, //added this line, city_name is custom value alias from easy profile

$data['activate']

By the way, do you know if using AcyMailing would work with easy profile custom fields?