I’m using the Elements.SetParameterToNone node from Springs to reset material parameters for several elements to “By Category”. It works great when I define the exact parameter name I want to change in a string and plug that into the paramName input, but fails when I try to feed it a list of paramet…

You’re saying even with the new list levels the original list of parameter names doesn’t work? Use an Object.Type node just to be sure. They do look identical to me as well. You could also use an == node to compare them to each other.

@Amanda_Lunger_AM , i can`t see your input to elements, but i think you have to flatten your list —> elements… KR Andreas

thanks, that didn’t seem to make a difference though. here is the full screen cap: Since we have a hodgepodge of furniture families all built differently, i figured I needed to have a set of nodes to take care of instance material parameters and another set to deal with type material parameters. Bu…

[image] Set Material of Category to Null I try to set the material of a Revit Category to Null / Empty. Used the “Set SubCategory Properties” from GeniusLoci, what works well for assigning materials. But how to “deassign”? Inside Revit I can use the Button in the lower le…

We can’t see your nodes. You need to zoom in far enough to be able to see the node names, then hit the export workspace as image button. It can also be useful to pin the preview dropdowns on important nodes.

You’ll have to use list levels. Does each element contain all 4 parameters or is that just an attempt to cover your bases?

oops, thanks for that. i’ve rexported the image.

not all elements contain all of the parameters, so if there is a more elegant way to go about this I’m open to suggestions!

The better option would be to get the elements and check for parameters with each of those names to only get the one parameter needed, but in theory it should still work with all parameters. You just need to get the list levels working since the node seems to be setup for only a single parameter.

The issue is that some elements do have multiple material parameters, and I’d like to be able to wipe the parameter value for all of them at once. This is a script that will be used across multiple projects with families of varying parameter names, so a static block defining the parameter name won’t…

In one list the values are strings and in the other list the values are not(?). Try the String from Object node after the List.Drop… node.

Set multiple material parameters to null

Packages

bvs1982 December 12, 2022, 8:01pm 4

Topic		Replies	Views
Setting all material parameters to <By Category> Revit	4	1460	May 19, 2023
Set material parameter value <By Category> Revit	2	1120	December 13, 2021
Set Material of Category to Null Uncategorized revit	11	1515	June 7, 2021
Change material Revit	8	7573	July 23, 2019
Set parameter to Materials and get parameter of the Elements that are composed of those Materials! Uncategorized	3	482	May 23, 2020

Set multiple material parameters to null

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