Solved camera not working

I try to add a internal camera, i do evrything with this http://wiki.beamng.com/CamerasInternal
But i dosen't work, when i change cameras game don't see my interial cameras,

 

I only got my internal cameras to work by having at least two definitions for them (for example my truck has both a wheel camera and a cockpit camera; removing any of the two definitions disables the other as well).

 

Thanks guys