public function add($key, $value) {
		if ($this->name === null) {
			throw new InvalidConfigException(get_class($this)." requires a name!");
		}
		if (!$this->getConnection()->getClient()->hset($this->name,$key, $value)) {
			return false;
		}
		$this->_data = null;
		$this->_count = null;
		return true;
	}