[Chrismaster]

Thanks for your Answer, I now get the position of the Inlet.
But there is one further problem.

The Inlet gets an extrusion, to reduce reversed flow. So the coordinates, i get are on the extrusion of the inlet. is there a posibillity, to get the coordinates of the "original" inlet?
And further... How do i get the Value of $$Area? Is it like $$Area(b_inlet_1) ??

I was thinking about moving the csys withhin the direction of the normal Vector. Or is there an easier possibility?

Best regards,

Christian