This is the typical way one can update the Firebase, Real Time Data Base. The set cloud is a single entity which does the magic. It is very cool or I should say too cool 
. When it fails there is no error indication. It is a silent death 
. Thunkable provides such good operation authentication feature for all of these App Features “Sign In” calls
If they can introduce another App Feature like RTDB operations and include blocks which authenticate the operation than life would be very easy. The above program I attached was developed my middle school kids from a small remote town in India. The monitor quality, size and internet is bad there. So in the above block for the “Whatsapp No” by mistake they added a “.” at the end. It was not obvious and they spent hours debugging it. If we had an error feature saying
”Hi Dude your so and so Key Value is badly formatted, “. # $ /” are not allowed as RTDB Key values” that would have made life so easy. I am sure there are other failure reasons. I would love to see a host of RTDB operation App Feature blocks get added in the next version. Thanks
Ananda