Gravity Forms Add Comment for Edited Entry Values

gf_add_comment_when_entry_value_is_changed.php

/*
 Gravity Forms 1.9.12.9 and above. Needs the 3rd arg on gform_after_update_entry
 Compares values from the previous entry to the current (updated) entry, and adds a comment marking the user, time, field, and previous to current values that was changes - one comment per change.
*/
function gf_add_note($entry_id, $note){
	RGFormsModel::add_note($entry_id, 0, __('gravity Forms'), $note);
}
add_action( 'gform_after_update_entry', 'magx_add_comment_for_changes_details', 10, 3 );
function magx_add_comment_for_changes_details($form, $entry_id, $original_entry){
	$entry = GFAPI::get_entry( $entry_id );
	$updated_fields = array_diff_assoc($entry, $original_entry);
	$removed = array_diff_assoc($original_entry,$entry);
	$updated_fields = array_intersect_key($removed,$updated_fields);

	foreach($updated_fields as $field_id=>$previous_value){
		$field = gf_get_field_by_id($form, $field_id);
		$previous_value = (!empty($previous_value) ? $previous_value : '(no value)');
		$updated_value = (!empty($entry[$field_id]) ? $entry[$field_id] : '(no value)' );
		gf_add_note($entry_id, wp_get_current_user()->display_name ." updated <i>{$field->label}</i> (Field ID {$field_id}) from <i>{$previous_value}</i> to <i>{$updated_value}</i> on ". date('F j, Y, g:i a T',time()));
	}
	
	
}

function gf_get_field_by_id($form, $field_id){
	if(!empty($form['fields'])){
		foreach($form['fields'] as $field_count=>$field){
			if($field_id == $field['id']){
				return $form['fields'][$field_count];
			}
		}
	}
}

This is similar to something I've been looking for weeks.

What I'm trying to achieve is to add a comment/note every time a notification has been sent.

Do you think it is possible?

I tried this

function gf_add_note($entry_id, $note){
RGFormsModel::add_note($entry_id, 0, __('System'), $note);
}
add_action( 'gform_after_email', 'log_notifiche', 10, 12 );
function log_notifiche($entry_id, $subject) {
gf_add_note($entry_id, wp_get_current_user()->display_name ." ha inviato una notifica dal titolo {$subject}");
}

but the problem is that I don't get the entry_id and instead of $subject I get the recipient email address...

Any advice pls?