# Convert between "Add to list" and "Add single" when changing cardinality of relation

**URL:** https://community.fibery.io/t/convert-between-add-to-list-and-add-single-when-changing-cardinality-of-relation/11221
**Category:** Ideas & Features
**Tags:** automations
**Created:** [August 27, 2026, 1:31pm UTC](https://community.fibery.io/t/convert-between-add-to-list-and-add-single-when-changing-cardinality-of-relation/11221 "2026-08-27T13:31:56Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![RonMakesSystems](https://sea2.discourse-cdn.com/flex020/user_avatar/community.fibery.io/ronmakessystems/32/14122_2.png) [@RonMakesSystems](https://community.fibery.io/u/RonMakesSystems)
#### Post date: [August 27, 2026, 1:31pm UTC](https://community.fibery.io/t/convert-between-add-to-list-and-add-single-when-changing-cardinality-of-relation/11221/1 "2026-08-27T13:31:56Z")

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The “Add” function is quite common as an automation, and when changing from to-many to to-one this automation action breaks, even though translating it to the to-one counterpart should be simple as the properties of the action are the same (list of fields and values).