Hi
I am looking for a way to set the material parameter of an object within a family to <By Category> programmatically.
I found this page, giving a clear solution, but I cant get it to work myself.
https://www.revitforum.org/third-party-add-ins-api-r-d/1326-set-material-bycategory-via-api.html
Can anyone verify if the solution mentioned there still works anno 2019?
Other solutions or suggestions are also welcome
Thanks
