Sliding Door won't work. CFrame (Position + Vector3) not moving?

I have a grouped everything together. I also referenced this video: https://www.youtube.com/watch?v=ZnBz_kbSnm8&index=45&list=WL&t=1115s

-Automatic Door, Script, -Door1, Frame, Frame, Frame, Frame, Glass, -Door2, Frame, Frame, Frame, Frame, Glass, Frame (x11), Glass (x3), Sensor,

Script:

door1 = script.Parent.Door1
door2 = script.Parent.Door2

doorClosed = true

script.Parent.Sensor.Touched:connect(function(hit)
	local h = hit.Parent:FindFirstChild("Humanoid")
	if h then
		if doorClosed then
			doorClosed = false
			for i = 1,30.3 do
				door1.CFrame = CFrame.new(door1.Position + Vector3.new(0,0,0.3))
				door2.CFrame = CFrame.new(door2.Position + Vector3.new(0,0,-0.3))
				wait()
			end
			wait(0.3)
			for i = 1,30.3 do
				door1.CFrame = CFrame.new(door1.Position + Vector3.new(0,0,-0.3))
				door2.CFrame = CFrame.new(door2.Position + Vector3.new(0,0,0.3))
				wait()
			end
			doorClosed = true
		end
	end
end)

Please help me, thank you.

First off, output is the information that the program processes and sends out. Print() is the easiest and simplest output function.

The easiest way to make a sliding door is not with CFrame, but with a PrismaticConstraint. Simply attach one attachment to the door, and one to the wall it is sliding from, and put a PrismaticConstraint in between. Then, change the ActuatorType to Servo, mess around with the settings a bit until you get what you like, change the TargetPosition to 0, and put the following code in your script:

door1 = script.Parent.Door1
prismatic1 = door1.PrismaticConstraint
door2 = script.Parent.Door2
prismatic2 = door2.PrismaticConstraint
--Assuming that you already have the PrismaticConstraints installed correctly, that is...

doorClosed = true

script.Parent.Sensor.Touched:connect(function(hit)
	local h = hit.Parent:FindFirstChild("Humanoid")
	if h and doorClosed then
        	doorClosed = false
		prismatic1.TargetPosition = 45 --or whatever you want
		prismatic2.TargetPosition = 45
		wait() --however long it takes for your doors to open
		prismatic1.TargetPosition = 0
		prismatic2.TargetPosition = 0
		wait() --the same amount of time
		doorClosed = true
	end
end)

See how much cleaner that looks using a Constraint instead of a CFrame?