help in cst

Hi
I am new to cst software. Just now started to learn it. I m trying to make a coil excited with current source. I m getting " Mesh representation of discrete port1 is a single point". How camn i solve this. PLZ help me

i believe you need to see there example. go to the help! i learn there through analyzing there examples. maybe you need to increase the mesh so that your port is not in the perfect conductor line. then use subgridding to make the simulation faster. and maybe instead of using discrete port, if thats the one you use, use the waveguide port to make it more easy