Need to connect 2 copper plates on HFSS

I need the technique to connect 2 rectangular copper plates mounted in a FR4 structure using HFSS. Anybody can help me? Thanks..

Can u please elaborate your requirement or post the HFSS model?

I'm not sure If I undestood but...
You must create a substract, put your plates on it, complete with an air box and finaly define the ports and bondary conditions...

I hope it helps!