CST MWS Beginner Help

Hi, I'm currently working on the very basic of creating a half wave dipole but I couldn't seem to exploit the far field radiation pattern. Whenever I click on the farfield tab, it will request me to select a subfolder or a tree item but there is none to be selected. Do you have any idea? Please help I'm very new to this software

Did you selected the farfield monitor before you run a simulation?

yes I did.. but there doesn't seem to have any subfolder under farfield
farfield monitor has zero area,
Anyone know what's this?

Can you post a pic of your farfield monitor settings? Which CST version you are using?