Get parametric family variations output to refinery

Dear community,

I am trying to get a parametric (mass or generic) Volume into dynamo and have its parameters changed by refinery; then output areas of surfaces that intersect the generated volumes.

This all works within D4R, it can flex and generate a result back to Revit, but I can’t get output in refinery to work. Seems I am missing to get the remember Node to work correctly in the first place.

I have also followed the “3Box Volume” example in Dynamo-sandbox, but this works using quboids/pure dynamo geometry. Essentially this is what I would like to do with a (bit more complex) revit-family.

Any help greatly appreciated,