Please Help! Microstrip Excitation on HFSS

Hi!

I'm trying to simulate a structure that involves a microstrip feed and I was wondering how do I set up the port. I tried by setting a lumped port but it didn't work. My question is: Do I have to draw a box in front of the port like I do to define a CPW port or is there any other way? I drew the box and defined as a lumped port and the simulation didn't work. So what are your recomendations?

You must define a current line for your Lumped port, you must study help of HFSS, it has good lectures.

KMPA