Quote: "Is there any way i can use a trigger zone, or scripting to turn off a static light?"
There's only one way that I can think of, but it requires a bit of outside-of-the-box thinking to pull off, and probably isn't what you had in mind.
Anyway, in order to simulate turning off a
static light, you would need to build two completely identical rooms. In one room you would place your static light, and in the other, no light. Then, when the player goes to "turn off" the light via wall switch, etc; have a script teleport the player to the other identical room where there is no light. The problem with this method (aside from adding extra polygons to your level duplicating your rooms), is that the player will need to "flip the switch" again to return to the first room via teleport connected to the rest of the level in order to progress in the game.
Another option would be to wait for the release of whichever mod says is working on dynamic shadows (can't remember which one it is, haven't been too active lately), and then simply use a dynamic light.
A third option, if you intend the room to be completely blackened out when the light is switched off, would be to make the switch on the wall or whatever you're going with, toggle a black HUD on/off over the player's screen behind the main HUD. Problem being, muzzle flash, and any other on-screen events during the time the lights are "off", wouldn't be visible.
A forth option would be to create your level's lightmapping in an external program, and then use a dynamic light simply to adjust the ambience in the room; without it affecting the highlights/shadows already baked onto the walls, etc (screenshot below).
The last option I can think of (and just a theory), would be to use a full screen shader that turns on/off when the switch is toggled, that lowers the contrast of the screen to make it appear as if the room has gotten darker. Would need triggers at the doors to adjust the FSS when the player leaves/enters the room again, and a full screen shader would be harder on performance than the other options, so...meh.
Kravenwolf
