Change on:

public function save($update_last_action = null) {
     $result = false;
     $update_last_action = true;
     if (elgg_trigger_before_event('create', 'object', $this)) {
           $result = parent::save();
           if ($result && $update_last_action) {
               elgg_trigger_after_event('create', 'object', $this);
           }
       }

      return $result;
}

Works great.

Thank you very much RvR.

I wish I can do it myself some day... maybe next incarnation .... :)