user menu for logged in and logged out users

function my_wp_nav_menu_args( $args = '' ) {

if( is_user_logged_in() ) { 

    $args['menu'] = 'logged-in';

} else { 

    $args['menu'] = 'logged-out';

} 

    return $args;

}

add_filter( 'wp_nav_menu_args', 'my_wp_nav_menu_args' );