I need help with this script?

When you hover the background gets longer when you leave it gets smaller this is the error.

13:14:04.680 - Players.Player.PlayerGui.Gui.Frame.Frame.TextButton.Script:4: attempt to compare > > two userdata values 13:14:04.681 - Stack Begin 13:14:04.683 - Script 'Players.Player.PlayerGui.Gui.Frame.Frame.TextButton.Script', Line 4 13:14:04.684 - Stack End

And this is the code.

local background  = script.Parent.Parent.Background

function enter()
	while background.Size < UDim2.new(0,250,0,50) do
		wait(.5)
		local bgd = background.Size + UDim2.new(0,10,0,0)
	end
end

function leave()
	while background.Size > UDim2.new(0,0,0,50) do
		wait(.5)
		local bgs = background.Size - UDim2.new(0,10,0,0)
		background.Size = bgs
	end
end
script.Parent.MouseEnter:connect(enter)
script.Parent.MouseLeave(leave)

Thanks for the help.

As obcdino said, you cannot compare a GUI size and a UDim2 value.'

You can simplify your code with a TweenSize. http://wiki.roblox.com/index.php?title=API:Class/GuiObject/TweenSize

Take out:

while background.Size > UDim2.new(0,0,0,50) do

and

local bgs = background.Size - UDim2.new(0,10,0,0)

and do Code:

background:TweenSize(UDim2.new(0,10,0,0),'Out','Quad',.5,true)

Just replace the UDim2 values with the new size of the GUI, and set the number to the number of seconds for it to take to tween.