MW WP Form　編集画面のビジュアルエディタをオフにする

function my_off_ve_in_page(){
    global $typenow;
    if( in_array( $typenow, array( 'page' ,'mw-wp-form' ) ) ){
        add_filter('user_can_richedit', 'my_off_ve_filter');
    }
}
function my_off_ve_filter(){
    return false;
}
add_action( 'load-post.php', 'my_off_ve_in_page' );
add_action( 'load-post-new.php', 'my_off_ve_in_page' );