Parameters with StorageType:None

[BardiaJahan]

There are some type parameters that need to be changed through window/dialogue boxes such as Wall Type Structure or Dimension Type Units Format. I believe the StorageType for those parameters is None. I am trying to change those values programmatically for family types. Is there any way to get access to them. Even a workaround for any of those would be a great help.

[GonçaloFeio1321]

Try finding out what they are by ParameterType.

[BardiaJahan]

I believe they are all of type Invalid.

[matthew_taylor · Accepted solution]

Hi @BardiaJahan,

'Invalid' parameter types are used by Revit and aren't exposed to us via the API.

As of Revit 2017.1, the dimensionType units are accessible:

http://thebuildingcoder.typepad.com/blog/2016/11/whats-new-in-the-revit-20171-api.html#4.3.2

Before that, they're probably not accessible.

To access wall structure layers, you'll need to access those via other than parameters. See Jeremy's topic listing:

http://thebuildingcoder.typepad.com/blog/about-the-author.html#5.17

The SDK has examples of compound structure component access also.

Cheers,

-Matt

[BardiaJahan]

@matthew_taylor

I have used wall structure API but I was wondering if there is a more generic way to modify these properties. Apparently there is not and many thanks for clarification.