protected function postSaveHook(JModelLegacy $model, $validData = array())
	{
		$item = $model->getItem();

		if (isset($item->params) && is_array($item->params))
		{
			$registry = new Registry;
			$registry->loadArray($item->params);
			$item->params = (string) $registry;
		}

		if (isset($item->metadata) && is_array($item->metadata))
		{
			$registry = new Registry;
			$registry->loadArray($item->metadata);
			$item->metadata = (string) $registry;
		}
	}