Sitl simulation mission planner and xplane

Hi, i have seen the steps to setup a sitl simulation using the xplane and mission planner in the below link. but they dont seem to work. please help me setup a sitl simulation using xplane(10/11)(i have both of them) and mission planner
Thanks in advance

You’ll need to make it a bit easier for us to help. Which link? (it was not in your post) What specific issue did you encounter?