How do I change camera position and make it work afterwards?

So I have this script to move the camera to a specific part I want:

local Camera = workspace.CurrentCamera
Camera.CameraType = "Scriptable"
for i = 0,1,.001 do --// Our own Tween function
	wait()
    	Camera.CFrame = Camera.CFrame:lerp(workspace.Cam2.CFrame,i)
end

but now if I want to make it go back the camera gets stuck! full script:

local infield = false
local viewing = false
script.Parent.Touched:Connect(function(hit) 
	local player = game.Players:GetPlayerFromCharacter(hit.Parent) 
	script.Parent.BillboardGui.Enabled=true
	infield=true
	function onKeyPress(inputObject, gameProcessedEvent)
	if inputObject.KeyCode == Enum.KeyCode.E then
		if infield then
			if viewing then
				local Camera = workspace.CurrentCamera
				script.Parent.BillboardGui.Enabled=false
				Camera.CameraType = "Custom"
				Camera.FieldOfView = 20
				for i = 0,1,.001 do --// Our own Tween function
   					wait()
    				Camera.CFrame = Camera.CFrame:lerp(Camera.CameraSubject,i)
				end
			else
				viewing=true
				script.Parent.BillboardGui.Enabled=false
				local Camera = workspace.CurrentCamera
				Camera.CameraType = "Scriptable"
				for i = 0,1,.001 do --// Our own Tween function
   					wait()
    				Camera.CFrame = Camera.CFrame:lerp(workspace.Cam2.CFrame,i)
				end
			end
		end
	end
end
end)

game:GetService("UserInputService").InputBegan:connect(onKeyPress)

errors: none.