public static function SendValue($cityName, $attributeName, $value)
 {
     $base_url = "https://osi-serv.osibr.com/piwebapi/";
     $url = $base_url . "attributes?path=\\\\MARC-PI2014\\AFPartnerCourseWeather\\Cities\\" . $cityName . "|" . $attributeName;
     $result = PIWebAPIWrapper::MakeGetRequest($url);
     $url_to_send = $result->Links->Value;
     $postData = "{'Value': " . $value . " }";
     $statusCode = PIWebAPIWrapper::MakePostRequest($url_to_send, $postData);
     return $statusCode;
 }