# \[APP\]\[Pro\] Custom Logic

**URL:** <https://community.homey.app/t/app-pro-custom-logic/92450>\
**Category:** Apps\
**Tags:** app, tools, flow, homey-pro, advancedflow\
**Created:** [October 21, 2023, 5:58pm UTC](https://community.homey.app/t/app-pro-custom-logic/92450 "2023-10-21T17:58:30Z")\
**Posts on this page:** 1\
**Showing post:** 12

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**Author:** ![SunBeech](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/sunbeech/32/111391_2.png) [@SunBeech](https://community.homey.app/u/SunBeech)\
**Post date:** [February 13, 2025, 2:48pm UTC](https://community.homey.app/t/app-pro-custom-logic/92450/12 "2025-02-13T14:48:21Z")

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I normally use the Better Logic Library app with its flow cards to perform calculations. Using the ‘calculate as tag’ card, the following expression works:

 ![IMG_1694](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/d/8/d82eec140eb252fc90ffcbb964f44053a92f1132.jpeg)

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