Shielded structure in Agilent Momentum

Hello

Is it possible to implement closed shield in Agilent Momentum?

For ex. Momentum gives non zero coupling between two small dipoles
when one of them is in the perfect conductor box. Box is vias between two closed boundary.!(?)

it looks via mesh is coarse to currents induced on vias cancell field of inner dipole.

You can use box

Thanks for reply

Box is to simulate structures inside the metal box only.
i want to simulate shield effect on coupling between structures.
interesting setups:
setup 1 : Shield is ideal i.e. closed box (Answer is known ofcourse. But what is simulator answer?)
setup 2. : box is open from one side
setup 3 : one coil over top side of long and wide metal rectagle and one coil under bottom side of this rectagle.

Can momentum produce resonable result?