# Custom fields for followers

**URL:** <https://forum.intervals.icu/t/custom-fields-for-followers/132696>\
**Category:** Questions & Help\
**Created:** [1 October 2026 19:41 UTC](https://forum.intervals.icu/t/custom-fields-for-followers/132696 "2026-10-01T19:41:47Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![DietrichS](https://forum.intervals.icu/user_avatar/forum.intervals.icu/dietrichs/32/89640_2.png) [@DietrichS](https://forum.intervals.icu/u/DietrichS)\
**Post date:** [1 October 2026 19:41 UTC](https://forum.intervals.icu/t/custom-fields-for-followers/132696/1 "2026-10-01T19:41:47Z")

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I am trying to fully understand the logic behind Custom Fields in Intervals.icu. I train athletes and currently have the Custom Fields set to full access, which allows me to add them to my athletes’ profiles. That part works fine.

My question is: What happens if I update or change the script on my end? Does it automatically update for my athletes as well? Is the Custom Field variable only imported once as a static copy? And if an athlete makes a change on their end, is that synced back to me, or do they keep their own local changes? In short, how does synchronization behave in this context?

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**Author:** ![MedTechCD](https://forum.intervals.icu/user_avatar/forum.intervals.icu/medtechcd/32/40383_2.png) [@MedTechCD](https://forum.intervals.icu/u/MedTechCD)\
**Post date:** [1 October 2026 19:49 UTC](https://forum.intervals.icu/t/custom-fields-for-followers/132696/2 "2026-10-01T19:49:57Z")

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If someone uses a Custom Field, they make a local copy of the field as it is at that moment. Changes on either side are not replicated.