# Bug? numericValue accepts x

**URL:** https://cl.desmos.com/t/bug-numericvalue-accepts-x/3579
**Category:** Questions
**Created:** [August 5, 2021, 3:07pm UTC](https://cl.desmos.com/t/bug-numericvalue-accepts-x/3579 "2021-08-05T15:07:27Z")
**Posts on this page:** 1
**Showing post:** 2

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### Author: ![cwinske](https://yyz1.discourse-cdn.com/flex031/user_avatar/cl.desmos.com/cwinske/32/3106_2.png) [@cwinske](https://cl.desmos.com/u/cwinske)
#### Post date: [August 5, 2021, 3:43pm UTC](https://cl.desmos.com/t/bug-numericvalue-accepts-x/3579/2 "2021-08-05T15:43:40Z")

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While I’m not disputing anything you are saying, I think Jay described their thinking [in this thread](https://cl.desmos.com/t/why-does-it-accept-letters-after-number-in-math-input/3252). The back end coding must have something like the firstDefinedValue built into numericValue to ignore possible units.

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