How do I swap light probes at runtime?

so I'm working on a day/night cycle , by switching light mapped data, everything worked fine, but only the light probes are the problem, it still stays the same ,dynamic objects still receives what appears to be sunlight from day lightmap (which is the default) even though it's using night lightmap. I found this thing : http://docs.unity3d.com/ScriptReference/LightmapSettings-lightProbes.html it says "It can be swapped to a different pre-baked one at runtime." But my question is how?