Switch camera or change FOV with lua

Hello, im trying to either change between two cameras or dynamically change the fov. I want to be using custom internal cameras and I have those both in place. But I can't seem to find any way to do either of these things.

I found this reference but not a way to actually use any of it: https://angelo234.github.io/List-of-BeamNG-Functions-And-Fields/velua.html

Any help would be appreciated.

 

Only for free camera:

Code:

core_camera.setFOV(angle)

For all cameras:

Code:

-- sample code

onUpdate(dt)
   if core_camera.getFovDeg() < finalFOV then
      core_camera.cameraZoom(direction * zoomSpeed)
      -- direction is 1 or -1
   else
      core_camera.cameraZoom(0)
      -- stop zooming
   end
end

Instead of calling 'getFovDeg()' method you could try implementing some dt-dependent FoV changer

 

Can you tell me how to specifically do that?
I haven't had much luck making LUA mods that work.
I want to set all car cameras (internal and hood especially) to a certain FOV, like say 65 degrees, and have it 'sticky' there for any car.
I don't care about the Free Camera.
Thanks!