public function setLearningProgress($a_ref_id, $a_user)
 {
     include_once './Services/Tracking/classes/class.ilLPMarks.php';
     $marks = new ilLPMarks($this->ref_id, $this->user_id);
     $marks->setMark($this->params["event_integer"]);
     $marks->setComment($this->params["event_text"]);
     if ($this->isNewEntry($a_ref_id, $a_user)) {
         $marks->__add();
     } else {
         $marks->update();
     }
 }