fresh start with MDBT42Q , some specs before start toe code

Ok I will try it today ,

some more "basic" questions

1. I'm trying to change the description of the UUID, but I get unknown all the time
   

2. I want to send the temperature - but when I read I get "1D" - what do I need to change so it will know it's temperature value and now byte data?

   NRF.setServices({
   "3e440001-f5bb-357d-719d-179272e4d4d9": {
   "3e440002-f5bb-357d-719d-179272e4d4d9": {
     description: "My_LED_UUID",  // optional, default is null,
     writable : true,
     readable : true,
     notify: true,
     maxLen : 10,
     value : "Setup_Data",
     onWrite : function(evt) {
       data = evt.data[0];
       if (data < 18) {
   digitalWrite(LED, 1);
   digitalWrite(Relay_Pin, 1);
   }
      else {
      digitalWrite(LED, 0);
      digitalWrite(Relay_Pin, 0);}
   
     }
   },
   	"3e440008-f5bb-357d-719d-179272e4d4d9": {
    description: "Device_Temp",  // optional, default is null,
     readable : true,
     notify: true,
    value : [E.getTemperature()]
   }
   }
   }, {});
   
   setInterval(function() {
   NRF.updateServices({
   "3e440001-f5bb-357d-719d-179272e4d4d9" : {
   "3e440002-f5bb-357d-719d-179272e4d4d9" : {
     value :  [data],//to be able to see that read is correct
     notify: true
   },
   "3e440008-f5bb-357d-719d-179272e4d4d9" : {
     value :  [E.getTemperature()],//to be able to see that read is correct
     notify: true
   }
   
   }
   }); }, 5000);
   

what am I missing?

Thanks ,