How to change MyBookTable section titles

function sh_change_about_book_label($label,$post_id,$section){
/**
* find the book id of the book you want to change and change the 8888 below to that number
* find the label you want to change and change ‘overview to that label’. Section label choices are:
* video-sample, overview, meta, endorsements, bookclub, audiobook, purchase, email-updates, email-updates_mailerlite, socialmedia, about-author’, preview, find-bookstore, reviews
* then change the “New Overview Label” to whatever you like
*/
if($post_id==8888 && $section == ‘overview’){
$label = ‘New Overview Label’;
}
return $label;
}
add_filter(‘mbt_book_section_title’, ‘sh_change_about_book_label’,10,3);