# Name of properties changed between versions

**URL:** <https://forums.buildingsmart.org/t/name-of-properties-changed-between-versions/5137>\
**Category:** Developers\
**Created:** [January 26, 2024, 2:41pm UTC](https://forums.buildingsmart.org/t/name-of-properties-changed-between-versions/5137 "2024-01-26T14:41:27Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![RenzoVenuti](https://avatars.discourse-cdn.com/v4/letter/r/ecd19e/32.png) [@RenzoVenuti](https://forums.buildingsmart.org/u/RenzoVenuti)\
**Post date:** [January 26, 2024, 2:41pm UTC](https://forums.buildingsmart.org/t/name-of-properties-changed-between-versions/5137/1 "2024-01-26T14:41:27Z")

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I noticed that some properties have been changed names from version 4.0.2.1 to 4.3.2 (e.g. Color becomes Colour). For those who have to develop software this becomes a problem if we have to maintain both versions.

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**Author:** ![bSI\_Tech\_Admin](https://sea2.discourse-cdn.com/flex016/user_avatar/forums.buildingsmart.org/bsi_tech_admin/32/344_2.png) [@bSI\_Tech\_Admin](https://forums.buildingsmart.org/u/bSI_Tech_Admin)\
**Post date:** [February 1, 2024, 7:23am UTC](https://forums.buildingsmart.org/t/name-of-properties-changed-between-versions/5137/2 "2024-02-01T07:23:00Z")

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There were two properties in IFC4: color and colour. In 4.3 the property names have been normalised. There is only one now (colour).

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**Author:** ![RenzoVenuti](https://avatars.discourse-cdn.com/v4/letter/r/ecd19e/32.png) [@RenzoVenuti](https://forums.buildingsmart.org/u/RenzoVenuti)\
**Post date:** [February 1, 2024, 2:34pm UTC](https://forums.buildingsmart.org/t/name-of-properties-changed-between-versions/5137/3 "2024-02-01T14:34:38Z")

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Ok, the problem that other properties were also renamed, just some examples in Pset\_ConcreteElementGeneral and  
Pset\_DistributionChamberElementTypeInspectionChamber.