Simple Camera CFrame help?

I have a 49 line script, don't worry. I will point out where the errors are. Anyway, every 10 seconds it should change target into CameraPart1 10 seconds later CameraPart2 then 3 and then back to 1. I dont know what the error but I do know where it might be. Please help!

game:GetService("StarterGui"):SetCoreGuiEnabled("All", false) --Ignore
game:GetService("StarterGui"):SetCoreGuiEnabled("Chat", true)

local target = "CameraPart1" --Here?
local camera = workspace.CurrentCamera
camera.CameraType = Enum.CameraType.Scriptable
camera.CameraSubject = target
local angle = 0
local num = 1

while wait() do
    if target == "CameraPart1" then --Here?
    camera.CoordinateFrame = CFrame.new(workspace:FindFirstChild(target).Position) --Here?
                            * CFrame.Angles(0, angle, 0)
        if num == 1 and angle >= 1 then
            num = -1
        elseif num == -1 and angle <= -1 then
            num = 1
        end
    elseif target == "CameraPart2" then
        camera.CoordinateFrame = CFrame.new(workspace:FindFirstChild(target).Position)
                            * CFrame.Angles(angle, 0, 0)
        if num == 1 and angle >= 0.5 then
            num = -1
        elseif num == -1 and angle <= -0.5 then
            num = 1
        end

    elseif target == "CameraPart3" then
        camera.CoordinateFrame = CFrame.new(workspace:FindFirstChild(target).Position)
                            * CFrame.Angles(0.1, angle, 0)
    end
   angle = angle + math.rad(num)
end

while wait(10) do
    target = "CameraPart2" --Here?
    wait(10)
    target = "CameraPart3"
    wait(10)
    target = "CameraPart1"
end

Thanks for your help!

I edited it: It is now only 42 lines.

IT MAY SEEM LIKE A LOT, IT ISN'T, ONLY 5 LINES NEED TO BE FIXED.