var apiID = "99af**************9bb8";
var phone = "89***********01";
var num = [
  ["RB**********CN", "21************************fe6"],
  ["RT**********HK", "e9************************3cd"]
];

function sendSMS(text){
  UrlFetchApp.fetch("http://sms.ru/sms/send?api_id="+apiID+"&to="+phone+"&text="+encodeURI(text));
}

function checkStatus(){

  for(i=0; i<num.length; i++){
    var response = UrlFetchApp.fetch("http://s1.17track.net/Rest/HandlerTrackPost.ashx?lo=www.17track.net&num="+num[i][0]+"&hs="+num[i][1]);
    var result = response.getContentText().match(/z":.*a":"(.*)".*b":"(.*)"}/i);
    if(UserProperties.getProperty(num[i][0]) != result[1]){
      var sendstring = num[i][0]+": "+result[2];
      sendSMS(sendstring);
      UserProperties.setProperty(num[i][0], result[1]);
    }
  }

}