# \#cardinality

**URL:** https://community.appfarm.io/tag/cardinality/47.md

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## [Multi Reference : Cannot Select Enum Into Context](https://community.appfarm.io/t/multi-reference-cannot-select-enum-into-context/1161)

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**Author:** [@Yassine.tebib](https://community.appfarm.io/u/Yassine.tebib)\
**Replies:** 3\
**Last updated:** [May 22, 2024, 2:26pm UTC](https://community.appfarm.io/t/multi-reference-cannot-select-enum-into-context/1161 "2024-05-22T14:26:33Z")

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Hey Appfarm i have here one when i use a runtime property with cardinality many: Workstation : Contains only one workstationEnum ( old process that i want to change ) Workstations : Contains a list of workstationEnum …

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## [What happens to filtered selection when changing a data source to single cardinality?](https://community.appfarm.io/t/what-happens-to-filtered-selection-when-changing-a-data-source-to-single-cardinality/82)

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**Author:** [@Lavrans](https://community.appfarm.io/u/Lavrans)\
**Replies:** 2\
**Last updated:** [December 21, 2022, 12:51pm UTC](https://community.appfarm.io/t/what-happens-to-filtered-selection-when-changing-a-data-source-to-single-cardinality/82 "2022-12-21T12:51:33Z")

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If you change a data source in an app from multi to single cardinality, what happens to for example update filtered selection action nodes? Will they work with an empty filter? If I create a new Update Object node with …