# Realtime DB User ID

**URL:** https://community.thunkable.com/t/realtime-db-user-id/1041878
**Category:** Questions about Thunkable X
**Created:** [December 28, 2020, 8:56pm UTC](https://community.thunkable.com/t/realtime-db-user-id/1041878 "2020-12-28T20:56:08Z")
**Posts on this page:** 1
**Showing post:** 4

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### Author: ![drted](https://sea1.discourse-cdn.com/flex015/user_avatar/community.thunkable.com/drted/32/92694_2.png) [@drted](https://community.thunkable.com/u/drted)
#### Post date: [December 29, 2020, 2:02pm UTC](https://community.thunkable.com/t/realtime-db-user-id/1041878/4 "2020-12-29T14:02:59Z")

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I think this post will answer your question and show you how to create firebase herarchies incorporating the userid.

> [@\[Solved\] Working with cloud lists](http://community.thunkable.com/t/working-with-cloud-lists/1040317/2):
>
> @jared, Glad to see you have come into the light (Firebase) and rejected the darkness (data sources). crazy_face The way Thunkable and Firebase interact on lists is the problem. Firebase assigns number to each item in the list. From my limited [reading](http://book.mixu.net/node/ch5.html), lists (aka Arrays) are sequence dependent. This seems like the rationale for Firebase assigning numbers. [image] (apparently) Thunkable assumes that the array/list in Firebase will be a zero based listed with no gaps. If there are gaps, Thu…

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