function my_wpf_tags_filter( $apply_tags, $user_id, $contact_id, $form_id ) {

    wp_fusion()->logger->handle( 'info', $user_id, 'Tags into filter:', array( 'tag_array' => $apply_tags ) );

    foreach ( $apply_tags as $i => $tag ) {

        if ( $tag == 'Je peux recruter d\'autres volontaires' ) {

            $apply_tags[ $i ] = 'Recruiter';

        } elseif ( $tag == 'Je peux m\'impliquer dans des actions de campagne' ) {

            $apply_tags[ $i ] = 'Volunteer';

        } elseif ( $tag == 'Je peux passer des coups de fil' ) {

            $apply_tags[ $i ] = 'Caller';

        }

    }

    wp_fusion()->logger->handle( 'info', $user_id, 'Tags out of filter:', array( 'tag_array' => $apply_tags ) );

    return $apply_tags;

}

add_filter( 'wpf_forms_apply_tags', 'my_wpf_tags_filter', 10, 4 );