Hi John! Thanks for the advice. I editet the script like below but it still does not work:
function update_acf_title($value,$post_id, $field){
$post_title = get_the_title( $post_id );
update_field('titel', $post_title, $post_id);
return $post_title;
}
add_action('acf/update_value/name=titel','update_acf_title',11,3);
I installed the ACF to Rest-API plugin to get all my fields via JSON but unfortunately I don’t have the page title, which is the most important thing 😉
If you have any others ideas please let me know.