How to make a character face in the direction of the camera?

I'm using BodyGyro to rotate the player's character. The code below makes it so that the character faces where the camera is positioned. I'm trying to get the opposite effect, but having difficulty. I vaguely remember reading a question about this on here a long time ago, but I can't remember or find it with Google.

gyro.CFrame = CFrame.new(root.Position, Vector3.new(camera.CFrame.X, root.Position.Y, camera.CFrame.Z))

Oh I think I know what you mean, try this:

local pos = root.Position - Vector3.new(camera.CFrame.X, 0, camera.CFrame.Z)
gyro.CFrame = CFrame.new(root.Position, pos)