Hi @Nitruc
The code above is an example, to demonstrate how a filter can be added. It is not to be taken literally as you have done.
Your errors say that you are trying to call a function ‘heading2’, but your above code does not show any reference to this.
What you want to do is something like this:
<?php
function custom_post_title( $value, $post_id, $field )
{
// update the $post via the wp_update_post function
return $value;
}
// acf/update_value/name={$field_name} - filter for a specific field based on it's name
add_filter('acf/update_value/name=heading2', 'custom_post_title', 10, 3);
?>
Does that help?
Thanks
E
