Rename file by ACF field, title and ID

Hi Jordy,

This is how I want to rename the files after uploading them (and in bulk):

ACF field – Title – ID

For example:
sale-this-is-property-title-1458__01.jpg

I tried to use this code:

function custom_filter_filename($new, $old, $post) { 
	
	$p_id = $post['ID'];
	$p_title = $post['post_name'];
	$buy_rent = get_field('buy_rent', $p_id);
	
	return $buy_rent.'-'.$p_title.'-'.$p_id.'.jpg';
}
add_filter('mfrh_new_filename', 'custom_filter_filename', 10, 3);

I use the PRO version.

Best regards,
Peter