[Resolved] Delete or change schema

Can I replace or remove only values of itemtype?
I found your code in another topic, which is looks like what i’ve been searching for:

add_filter( 'generate_body_itemtype', 'tu_custom_body_itemtype' );
function tu_custom_body_itemtype( $type ) {
    if ( is_page( array( 'about', 'about-us' ) ) ) { 
        return 'AboutPage';
    } elseif ( is_page( array( 'contact', 'contact-us' ) ) ) { 
        return 'ContactPage';
    } elseif ( is_search() ) { 
        return 'SearchResultsPage';
    } elseif ( is_front_page() ) {
        return 'WebPage';
    } elseif (is_single() ) {
        return 'Article';
    } else {
        return 'WebPage';
    }
}

I’ve tried to add this (with ‘generate_article_schema’ instead ‘generate_body_itemtype’) and previous code in Code Snippet plugin and directly to new plugin file. It still doesn’t work. Do I need to add only this code or somthing else? Or these filters not working now?

Can you check this code on your site?
I simplified the code as much as possible, to prevent any errors:

add_filter( 'generate_article_schema', 'tu_custom_body_itemtype' );
function tu_custom_body_itemtype( $type ) {
        return 'WebPage';
}

Still have “CreativeWork” on all pages. 🙁

It works with generate_article_itemtype. Thanks!