/**
  * Is the current user have right to create the current task ?
  *
  * @return boolean
  **/
 function canCreateItem()
 {
     if (!parent::canReadITILItem()) {
         return false;
     }
     $change = new Change();
     if ($change->getFromDB($this->fields['changes_id'])) {
         return Session::haveRight('change', UPDATE) || Session::haveRight('change', Change::READMY) && ($change->isUser(CommonITILActor::ASSIGN, Session::getLoginUserID()) || isset($_SESSION["glpigroups"]) && $change->haveAGroup(CommonITILActor::ASSIGN, $_SESSION['glpigroups']));
     }
     return false;
 }