# "is number?" ... that cannot be found

**URL:** https://community.thunkable.com/t/is-number-that-cannot-be-found/484198
**Category:** Questions about Thunkable X
**Tags:** beginner
**Created:** [February 25, 2020, 4:39pm UTC](https://community.thunkable.com/t/is-number-that-cannot-be-found/484198 "2020-02-25T16:39:26Z")
**Posts on this page:** 1
**Showing post:** 2

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### Author: ![domhnallohanlon](https://sea1.discourse-cdn.com/flex015/user_avatar/community.thunkable.com/domhnallohanlon/32/29554_2.png) [@domhnallohanlon](https://community.thunkable.com/u/domhnallohanlon)
#### Post date: [February 25, 2020, 5:24pm UTC](https://community.thunkable.com/t/is-number-that-cannot-be-found/484198/2 "2020-02-25T17:24:24Z")

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Hi @rigardo.christianoud 👋

Welcome to the community!

We don’t have a specific `isNumber` block right now, but we were discussing something very similar in this thread yesterday:

> [@How to check if text input is a number?](http://community.thunkable.com/t/how-to-check-if-text-input-is-a-number/482221):
>
> I need a number input from the user. How can I check whether this has been given? I’ve already set the keyboard to numeric, but users could still input non-number entries. In that case I would like to set a certain label text to: “Please enter a number.”

Hope that helps!

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_[View the full topic](https://community.thunkable.com/t/is-number-that-cannot-be-found/484198)._