Why this don't work?

Mah script

script.Player.Entered:connect(function()
	if script.Parent.Parent.StartScreenGUI.Position == UDim2.new(55, 0, 55, 0) then
		StartScreenGUI.Position = UDim2.new(19.19, 0, 8.4, 0)
end

Problem 1, the end function keeps on highlighting red.

Problem 2, my script is post to find a image called StartScreenGUI is post to show up, it starts at (55, 0, 55, 0) position and it covers the whole screen and the script is post to find it when the player enters the game, and changeStartScreenGUI to go to position (19.19, 0, 8.4, 0) [because i put this in a frame so it's not at (0, 0, 0, 0), but it wont just show up.

Want to see the game i'm making, go here \v/ http://www.roblox.com/games/324723342/OutLaunch-Zombies-AP-CLOSED but, i haven't updated it to what i have in studio, plus, the game is not done.

What's mah problem with mah script?

P.S. I did test.