public function set($name, $value)
    {
        if (is_string($name)) {
            $this->session[$name] = $value;
            return ((isset($this->session[$name]) && null != $this->session[$name])? true : false);
        } else {
            throw new Server500(new \ArrayObject(array("explain" =>
                "Session Error : Your session name is not a string value", "solution" =>
                "Please check your value type")));
        }
    }