add more recipients for new comment email notification

Hello, if anybody add new comment admin receives email notification.
Is it possible to add more email addresses to this email notification?
I tried to update plugin with code

$to = array();
        $to[] = $email;
        $to[] = '[email protected]';
        wp_mail($to, $subject, $message, $headers);

in wpc.php line 821 and 867, but not working.
Is it possible somehow achieve described functionality?

Thank you
Jan