Conceptual Masses - assign mass levels

i have got a script that will generate conceptual masses via dynamo. Where i am struggling is, i cannot find a why to assign mass levels to the created masses via dynamo.
the workflow is to create the solid in dynamo, generate the conceptual mass in revit, assign the masses mass levels based on some rules and then run some quick metrics on it. I havent managed to do it via the parameters.
Thanks in advance

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hey, I have been exploring Masses lately. Do you mind sharing screen shot of Dynamo graph ?