Bro you forget the variables actor and camera actor (the camera actor is only for tags, you dont need put on your game, just paste it)
Now create a actor (It could be anything) and put a tag "3D_sarocast_actor" on your actor (He comes from camera actor i think), and put theses variables on your actor: uz, uy, ux, ly, lx, lz, ObjectHeight and ObjectWidth (Width and Height you can just put the number on 50) (put uz, ux 50 | uy 70 | ly, lz, lx -50 to put hitbox) and done! (I think)