Code-Snippets-Functions/Execute a function on a child site/WooCommerce/include-custom-thank-you-page.txt

add_action( 'woocommerce_thankyou', 'wc_custom_thank_you_page', 5 );
  
function wc_custom_thank_you_page() {
    
   $page_id = 540;
   $page_object = get_page( $page_id );
   echo $page_object->post_content;
 
}