# Source of documentation on functions available in Homey Pro flows

**URL:** <https://community.homey.app/t/source-of-documentation-on-functions-available-in-homey-pro-flows/64038>\
**Category:** Questions & Help\
**Tags:** homey-pro\
**Created:** [May 25, 2022, 12:12pm UTC](https://community.homey.app/t/source-of-documentation-on-functions-available-in-homey-pro-flows/64038 "2022-05-25T12:12:18Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![Morgan](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/morgan/32/15416_2.png) [@Morgan](https://community.homey.app/u/Morgan)\
**Post date:** [May 26, 2022, 7:05am UTC](https://community.homey.app/t/source-of-documentation-on-functions-available-in-homey-pro-flows/64038/2 "2022-05-26T07:05:34Z")

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It is mathjs functions. You can read more here:

> [@Available math functions](https://community.homey.app/t/available-math-functions/16622):
>
> Are there built-in math functions that can be used in variable calculations (in basic logic flows, not Homeyscript)? If so, where can I find the docs?

You can also try the app Javascript Logic.

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