Adding shared parameters to system family?

[glenncai]

I searched this topic before and people sad this is impossible. but today after I imported a model from ETABS I saw a additional parameter called "Level Style" in the Level Properties. You cannot see this parameter from a new Revit project. Can this archived by API?

[matthew_taylor · Accepted solution]

Hi @glenncai,

Yes, you can add shared parameter bindings to all instances (or types) of elements in a specific category.

Not all categories, but Levels are in the 'can do' list. (Check by Category.AllowsBoundParameters)

There are plenty of posts that illustrate this sort of thing. Jeremy's blog is always a good place to look:

http://thebuildingcoder.typepad.com/blog/2010/07/shared-type-parameter.html

If I misunderstood, please enlighten me!

Cheers,

-Matt

[glenncai]

Thanks for your information Matthew. 

I bind the parameter successfully. 

I also found a very helpful link for me:

https://knowledge.autodesk.com/search-result/caas/CloudHelp/cloudhelp/2016/ENU/Revit-API/files/GUID-...