function changeActor($PARAMETERS)
{
self::$CURRENT_USER = $this->getPerson($PARAMETERS);
if ($this->currentUser()->success()) {
self::$IS_AUTHENTICATED = true;
$this->success = true;
return $this->currentUser();
} else {
self::$IS_AUTHENTICATED = false;
$this->success = false;
$this->throwError($this->currentUser()->error());
return null;
}
}