topic Re: Revit 2024 'Other' Parameter Group in Revit API Forum

Revit 2024 'Other' Parameter Group

kevin_fielding — Fri, 07 Jul 2023 13:02:28 GMT

Hi,

With the change over to ForgeTypeId and GroupTypeId in Revit 2024 instead of BuiltInParameterGroup enumerations, I just wanted to share how to define the 'Other' group for parameters as it doesn't appear to be documented.

Whereas previously you would use

BuiltInParameterGroup.INVALID

In 2024 and beyond you need to use

new ForgeTypeId(string.Empty)

Other groups can be found using the GroupTypeId class like GroupTypeId.Data

Hope this helps others searching for this.

Kevin

Re: Revit 2024 'Other' Parameter Group

jeremy_tammik — Fri, 07 Jul 2023 16:37:08 GMT

Thank you for the very useful hint!

Re: Revit 2024 'Other' Parameter Group

jeremy_tammik — Tue, 14 Nov 2023 10:14:33 GMT

Shared on the blog for posterity:

https://thebuildingcoder.typepad.com/blog/2023/11/journal-magic-adjacent-rooms-and-room-boundary.html#5

Re: Revit 2024 'Other' Parameter Group

andrea.tassera — Wed, 19 Feb 2025 04:42:17 GMT

Sorry for reviving an old post.

Apparently using new ForgeTypeId(string.Empty) only works for Revit 2024 and above. I was just testing what's on this post in my code and it was working with Revit 2025, but not in Revit 2023.
The ForgeTypeId change seems to be applied from Revit 2021 onwards so I thought it was strange that it wasn't working in 2023. I did some experimentation and if you use null instead of new ForgeTypeId(string.Empty) then it works in all versions of Revit.

Thought you guys might be interested 😉

Re: Revit 2024 'Other' Parameter Group

niklas_portmann — Thu, 02 Oct 2025 11:17:42 GMT

Hey all, sorry again for reviving this.

It seems that the ParameterBindings.ReInsert(definition,binding,new ForgeTypeId("")) method will actually not update the parameter group and just keep it as the same parameter group as before. That means once you've set the parameter group to any non-empty type id it's impossible to reset it to the "Other" parameter group?

I also tried with ParameterBindings.ReInsert(definition,binding,null) but it had the same effect.

Does anyone of you have a workaround for this or am I just missing a piece of information here?