Ultimate Member - Display Profiles with Today's Birthdays in the Member Directory

gistfile1.txt

add_filter("um_prepare_user_query_args","um_061522_show_todays_birthdays", 10, 2 );
function um_061522_show_todays_birthdays( $query_args, $directory_data ){

    $directory_id = $directory_data['form_id'];

    if( 320 !== $directory_id ) return $query_args;

    $query_args['meta_query'][ ] = array(
            'key' => 'birth_date',
            'value' => date("/m/d"),
            'compare' => 'RLIKE'
    );

    $query_args['orderby'] = array(
        'first_name' => 'ASC',
    ); 

    return $query_args;
}

This code doesn't work, it's confusing people