function updateImprovementsBuildings($xmlStr)
 {
     if (!($domDoc = domxml_open_mem($xmlStr))) {
         return false;
     }
     $improvementsBuildings = new ImprovementsBuildings();
     $improvementsBuildings->parseDomDocument($domDoc);
     $ret = $improvementsBuildings->updateRecord();
     return $ret;
 }