Parameters in group list

Hi all,

I have a problem, i want to put the value"surface" in the parameter’s sublist element, but i don’t know how to use the input of Element.Set parametrByName

Thanks for your help :slight_smile:

@jodiedecoopman There is no way anybody would be able to figure out your problem with the information provided
Please provide the file and screenshots with list previews and error messages expanded

sorry, here is the entire screen

Warning: One or more of the input types do not match. Unable to find a version that accepts SetParameterByName type arguments (__array, string, array __)

@jodiedecoopman Try introducing a String from Object node after Math.Sum

this does not change the error message, the problem comes from input “element”

Note: This wouldn’t be necessary in the latest versions of Dynamo.