Your problem is trying to adjust the position after putting it in the world. Swap those two lines around and it should work fine.
Also, about that transparency thing: characters are drawn in a special way. The body is already fully transparent -- it's just the physics part of the player, not the graphics part.
Also, about that transparency thing: characters are drawn in a special way. The body is already fully transparent -- it's just the physics part of the player, not the graphics part.