How to make gui change position from a script ?

I have this but I am pretty sure this is wrong. I think I need something like Udim2 or something along those lines but I dont know what it is .

if game:GetService("UserInputService").ModalEnabled == false then
	script.Parent.Position=(0.454, 0),(0.442, 75)
end

if game:GetService("UserInputService").ModalEnabled == false then
    script.Parent.Position = UDim2.new(0.454, 0, 0.442, 75)
end

UDim2 creates a new UDim2, using two pairs of UDim coordinates, used for Gui Objects.