Impedance Measurement: CPW and CPS in HFSS

Hello everybody!

I have disigned a CPW-to-CPS transformer but I would like to know the impedance along the line, as the line has a impedance tranformer. Dimession are to be 50 to 120 ohm resistance (real impedance) but I don't know how to measure them using HFSS.
Is there some function in the program that allows to measure the impedance in a point?

That transformer will excitate an spiral antena I would like o know the simulated impedance at the input of the antenna

Thanks Everybody!