# Adalo "custom formula": how to add data from collections? Please help!

**URL:** <https://forum.adalo.com/t/adalo-custom-formula-how-to-add-data-from-collections-please-help/40625>\
**Category:** Get Help\
**Created:** [July 19, 2023, 3:57pm UTC](https://forum.adalo.com/t/adalo-custom-formula-how-to-add-data-from-collections-please-help/40625 "2023-07-19T15:57:47Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Aprokhorov](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.adalo.com/aprokhorov/32/30558_2.png) [@Aprokhorov](https://forum.adalo.com/u/Aprokhorov)\
**Post date:** [July 19, 2023, 3:57pm UTC](https://forum.adalo.com/t/adalo-custom-formula-how-to-add-data-from-collections-please-help/40625/1 "2023-07-19T15:57:47Z")

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I tried to record the result of a simple sum of one collection record (number) + another collection record (number). No options for this?

Screen record: [How to make math - YouTube](https://youtu.be/OCoG9XNHtJk)

Clonable app: [Test App](https://previewer.adalo.com/4bbb2038-2645-4e4f-b04f-2fd87b2fc587)

No tutorials and no info in the docs.

Please help!

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**Author:** ![system](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.adalo.com/system/32/40401_2.png) [@system](https://forum.adalo.com/u/system)\
**Post date:** [July 29, 2023, 3:57pm UTC](https://forum.adalo.com/t/adalo-custom-formula-how-to-add-data-from-collections-please-help/40625/2 "2023-07-29T15:57:49Z")

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