Apartment surface


Currently working on Revit 2015 for the development of a housing building, i’m looking for a solution to get the global surface of each apartment in a label. At the moment, I give to each room of my apartment the same parameter (ex : Apartment A-102) and then I have to check the cumulative surface in the nomenclature and rewrite it in my label.

Is there a Dynamo tool to do it ?

Thank you !