Getting the halo property of a light source through script

I am adding point lights in my scene ( max 6 ) and I want to be able to enable its Halo property via script. However in the documentation reference, they haven't mentioned how to enable the halo property of a light source via script.

This is what I have so far in the script.

GameObject lightObj =newGameObject("Light");
lightObj.AddComponent<Light>();
lightObj.light.color =Color.blue;
lightObj.transform.position = city.transform.position +newVector3(-6.0f,0,0);

Point Lights have a property "Draw Halo" on the Inspector but how do I enable it via script?​

 

The last answer in this thread might still work.
http://forum.unity3d.com/threads/toggle-halo-from-script.41944/