Help needed with updating firebase Database

[sabersingh]

Hi there,
How can I update certain tags using set() function or something simillar in firebase without deleting previous data.
I am using the code below for updating my DB:
`

      JsonObject& FirebaseRequest2 = jsonBuffer.createObject();
      FirebaseRequest2["Command"] = 0; 
      FirebaseRequest2["Status"] = "ON";
      FirebaseRequest2["deviceID"] = DeviceID;
      Firebase.set("/Devices/" + DeviceID, FirebaseRequest2);

`
But I have another tag named "Permitted" under "Devices" tag which I don't want to change but when I run my program as it is, It deletes the "Permitted" tag. Please help me out with it. _/_