ROBLOX's Problem or My Problem?

I finished my first person script for my game.

local plr = game.Players.LocalPlayer local cam = game.Workspace.CurrentCamera local chr = nil

chr = character plr.CameraMode = 1

while false do wait () cam.CameraType = 0 cam.CoordinateFrame = CFrame.new (200,10,0) cam.Focus = CFrame.new (200,7,500) cam.FieldOfView = 20 end

I tested it out in ROBLOX Studio and it works perfectly fine. But when I go into the game normally it doesn't work. Is this sort of thing ROBLOX's problem or do I have to go back and look at the script again?