How to modify the ACF user object results

my_acf_fields_user_result.php

<?php
add_filter('acf/fields/user/result', 'my_acf_fields_post_object_result', 10, 4);
function my_acf_fields_post_object_result( $text, $user, $field, $post_id ) {
    $text .= ' (' . $user->user_email .  ')';
    return $text;
}