FirebaseDB - how to read/write field on treeview structure db?

MIT App Inventor Help
1

I have a FirebaseDB (created with pc system) with nodes on the first level, on the second level, and on the third level
Eg

CAR
–Wheel
----rubber = 1234
----valve = cod345
–Door
----Handle = abcde
----glass = refAAA

Using the GetValue method and providing the CAR tag, I can read a single string containing the name of the fields and the values
How to read and write the value of the ‘valve’ field (third level node) directly?

2

Here is one way…

image

3

Word of warning....

4

Thank you very much