Set Material Identity "Class" and "Keywords" from Excel to Revit with Dynamo

Greetings,
I am having issues bringing in some Material Identity information from Excel to Revit with a script I’ve created. All the instances work except “Class” and “Keywords”. When I attempt to run the script I receive and error that says “No parameter found by that name.”
I would love someone’s insight that knows which nodes I need to use for this case. Thanks!