Spawn site at specific position

Please add a command to spawn a site at a specific position because the current spawnatmypos doesn't work properly. Or just DM me, I already wrote that.

Hi. You might be using the wrong command. Please record a video showing that it’s not working.

Just like you said, I'm using spawnsitemypos.
https://codefling.com/files/support/27779-spawning-at-random-location/

and here is a video with command use