I don't know what I'm doing wrong

I'm trying to make it stop when you stop holding down

local CoolPartFolder = game.Workspace

UserInputService = game:GetService("UserInputService")

keypress = false

UserInputService.InputBegan:Connect(function(input)

`if UserInputService.InputEnded then`

	`keypress = false`

`end`



`if`	`UserInputService.InputBegan then`

	`keypress = true`

`end`

`if input.KeyCode == Enum.KeyCode.E then`

	`if UserInputService.InputBegan then`

		`keypress = true`

	`elseif UserInputService.InputEnded then`

		`keypress = false`

		`while keypress == true do`

task.wait(0.1)

local NewInstance = Instance.new("Part")

NewInstance.Parent = CoolPartFolder

NewInstance.Position = Vector3.new(1,100,1)

		`end`

		

	`end`

`end`

end)