How to make a press e to open/close menu?

So i am trying to do a press e key to open menu and i tried this:

local plr = game.Players

plr.GetMouse().KeyDown:Connect(function(K)
	if K == "e" then
		script.Parent.Visible = true
	end

end

end)

It worked for sometime then i left roblox studio trying to get a x button to work and i came back and it no work anymore... Is there something i need to improve or did i do something wrong?

Use UserInputService. For example:

local UserInputService = game:GetService("UserInputService")

UserInputService.InputBegan:Connect(function(input)
	if input.KeyCode == Enum.KeyCode.E then
		script.Parent.Visible = true
	end
end)