I had this dream when I COULD turn on the light.
It went like this:

I was fighting some zombies and they were too strong for me and my sidekick to fight. So we hopped in a tank nearby. But it was dark in there. My sidekick said look for the lightswitch and I did. I found the switch and actually turned the light on.

In every website about lucid dreams they said its IMPOSSIBLE to change light levels. But I just DID.

can someone explain this to me?