Surface currents on Transition Boundary Condition

Hello,

I was wondering how do I look at the surface currents on each side of the transition boundary condition. I'm using Magnetic Fields module if that matters.

I tried up() and down() operators on surface currents (mf.Jsz) which gives zero. side(1, ) operator gives an error. These operators work fine on volume currents, but the results are not plausible.

Thanks, Mahbod