Sync a custom meta field on user registration

Hi,

I’m experimenting. I’m using a custom function to add one custom field of new user meta at the same time a new WordPress user is created. That works fine.

But WPF doesn’t sync that custom field to my CRM. The field is linked in Contact Fields settings. It only syncs if I manually go to the user admin and click “Update Profile.”

I think this function is what’s needed, but it didn’t work for me. Any tips on this?

function my_watch_meta_field( $fields ) {
	$fields[] = 'my_field_name';
	return $fields;
}
add_filter( 'wpf_watched_meta_fields', 'my_watch_meta_field' );

https://wpfusion.com/documentation/filters/wpf_watched_meta_fields/