My object is spawned randomly inside the map, added your values but it's not working at the moment
i don't see my object rotating
If you spawn the object randomly then based on neverk set up you should change the (Xpos & Ypos) to the
object spawned cordenates example:
(Trigger where you Spawn the object): Action spawn Object
Set>>>> Xpos = Object.X
SetY>>> Ypos = Object.Y
Also, make sure when you use the set position you put it under an (every thick) event as neverk explained
Every Thick: set position
x = xpos + cos(tickcount)* radius
y = ypos + sin(tickcount)* radius
Update: ups to late :) I see that neverk updated the post