public function SetData($Key, $Value = NULL, $AddProperty = FALSE) {
      if (is_array($Key)) {
         $this->Data = array_merge($this->Data, $Key);

         if ($AddProperty === TRUE) {
            foreach ($Key as $Name => $Value) {
               $this->$Name = $Value;
            }
         }
         return;
      }

      $this->Data[$Key] = $Value;
      if($AddProperty === TRUE) {
         $this->$Key = $Value;
      }
      return $Value;
   }