public function setCount($n = null)
{
wa()->getStorage()->open();
$model = new waAppSettingsModel();
$app_id = $this->getApplication();
$model->set($app_id, 'update_counter', $n);
$model->set($app_id, 'update_counter_timestamp', $n === false ? 0 : time());
return parent::setCount($n);
}
