# If there's a duplicate nickname in the database, I'd like to make an error

**URL:** <https://community.thunkable.com/t/if-theres-a-duplicate-nickname-in-the-database-id-like-to-make-an-error/1745046>\
**Category:** Questions about Thunkable X\
**Created:** [February 21, 2022, 1:38am UTC](https://community.thunkable.com/t/if-theres-a-duplicate-nickname-in-the-database-id-like-to-make-an-error/1745046 "2022-02-21T01:38:27Z")\
**Posts on this page:** 1\
**Showing post:** 4

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**Author:** ![tatiang](https://sea1.discourse-cdn.com/flex015/user_avatar/community.thunkable.com/tatiang/32/55482_2.png) [@tatiang](https://community.thunkable.com/u/tatiang)\
**Post date:** [February 21, 2022, 3:57am UTC](https://community.thunkable.com/t/if-theres-a-duplicate-nickname-in-the-database-id-like-to-make-an-error/1745046/4 "2022-02-21T03:57:55Z")

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Take a look at the way the cloud variables are set up in these topics:

> [@\[Solved\] How to take nested value from FIrebase](https://community.thunkable.com/t/solved-how-to-take-nested-value-from-firebase/1035323):
>
> How can I take this value from firebase as a list to show it in a list viewer [image] [image] This is not working arrow_up

> [@\[Solved\] How to update nested Firebase value?](https://community.thunkable.com/t/solved-how-to-update-nested-firebase-value/1019758):
>
> I’m wondering how to update a nested Firebase value without the Realtime\_DB component. For example, how would I set the value of game data–\>Players–\>Guest–\>Name below? I know how to create that object but… do I just create the object all over again when I want to update the value? [Screen Shot 2020-12-03 at 11.47.32 PM] This is what I had in mind but it won’t work for obvious reasons:

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_[View the full topic](https://community.thunkable.com/t/if-theres-a-duplicate-nickname-in-the-database-id-like-to-make-an-error/1745046)._