Very very urgent

Hi,
I'm simulating a mushroom structure in order to extract circuit equivalent parameters at 11 GHz.

lambda refinement set to 0.05
ΔS=0.05

The problem is how to mesh correctly the via ?because the meshing subject is not clear at all in HFSS help.

Thanks

lambda refinement is basically done by lambda/3 value i.e.0.33333 and this is also default value and if u change this value ur result affected.........baause it changes the mesh...........