Create solid/void between a level and some multiple floors/walls etc

Hi,

I would need to create a solid/void between a level and some multiple floors/walls etc. above or below this level. I would like to select the surfaces of floors/walls etc. I am interested in and the level and it would create a solid/void perpendicular to the level. How would it be best to proceed through the dynamo?

I also thought about creating family instance by geometry, but I don’t know how to combine several solid/void into one family. I don’t want it to create many families for me in Revit. Thanks

Something like this:

Hello @kalataFR2DT …not 100 sure, but do you mean something…

Revit_5FVtJ65DCC