/**
  * delete questions
  */
 function confirmDeleteQuestionsObject()
 {
     // delete questions after confirmation
     foreach ($_POST["q_id"] as $key => $value) {
         $this->object->deleteQuestion($value);
     }
     if (count($_POST["q_id"])) {
         ilUtil::sendSuccess($this->lng->txt("qpl_questions_deleted"), true);
     }
     $this->ctrl->setParameter($this, 'q_id', '');
     $this->ctrl->redirect($this, "questions");
 }