public function activate()
    {
        $app = Facade::getFacadeApplication();
        $db = $app->make('database')->connection();
        $db->executeQuery('update SystemCaptchaLibraries set sclIsActive = 0');
        $db->executeQuery('update SystemCaptchaLibraries set sclIsActive = 1 where sclHandle = ?', [$this->sclHandle]);
        $this->sclIsActive = 1;
    }