How to retreive data from child bucket in firebase?

MIT App Inventor Help
1

I want a help to retreive data from child bucket from firebase db. Iam trying the to retreive the datas using a text box
This is my firebase structure

            > users
                > Firstuser
                  Number:1234567890
                  Password: abcd
2

Like so:

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If you only want to return a single value, e.g. the number, then:

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