Help solve the problem of Obesity with scripting!?

Helping me with this script will help me complete my game, which promotes fruit, which will help the problem of obesity!

This script is meant to: Load when picking a fruit; showing as a loading bar Once loaded give the fruit/ xp, etc...

This script works until the player lifts the button up. Then it still does done() and does it in the background until you try and pick another fruit where it gives you a load of fruit at the same time, then randomly gives you fruit...

Yeah, it's really messed up. I have no idea why could you help me make this place awesome? Credit will be given! :D

Place: http://www.roblox.com/Nature-V-0-02-place?id=139229308

local fruit, fruitTop, x, y, z, done = script.Parent, script.Parent.Fruit, false, true, true, false       
xpamount = 10 -- xpamount

script.Parent.ClickDetector.MouseClick:connect(function(plr)
if x == false then
	x = true
	
	barframe = plr.PlayerGui.ProgressBar.Frame
	bar = barframe.Bar
	pick = plr.PlayerGui.ProgressBar.Pick
	
	pick.Visible = true
	
	pick.MouseButton1Down:connect(function() -- Pick Button/ Progress bar animation
		if y == true then
			y = false
			barframe.Visible = true
			pick.Visible = true
			z = true
			while z == true and y == false do
				for size = 0,1,0.015 do
					wait(0.03)
					bar.Size = UDim2.new(size,0,1,0)
					if z == false then
						bar.Size = UDim2.new(0,0,1,0)
						barframe.Visible = false
						pick.Visible = false
						y = true
					end
					if size >= 0.90 then
						z = false
						bar.Size = UDim2.new(0,0,1,0)
						barframe.Visible = false
						pick.Visible = false
						done()
						y = true
					end
				end
			end
		end
	end)
	
	pick.MouseButton1Up:connect(function()	
		z = false
		bar.Size = UDim2.new(0,0,1,0)
		barframe.Visible = false
		pick.Visible = false
		y = true
		x = false
	end)
	
	function done()
end

end)

Fixed it- mainly not putting (x = true) in the right places and I cleared it up :)

Play it here to test it for me! (Probably still some glitches)

Place: http://www.roblox.com/Nature-V-0-02-place?id=139229308