My Boolean based character design system does not work?

Ok basicly i'm creating a game that has a customisation feature, I want users to be able to outfit their characters and only be able to choose one item at a time. I want this to add to a "Total price" i have included a screen shot so you get the general idea

https://gyazo.com/b55da258104fe4baf7eba969473e9160

When they click an item it replaces the item on the right, I've managed to do this visually. But i would like the items

3rd Item in the box.

LA1 = script.Parent.Parent.Parent.LegButton.LA1
LA2 = script.Parent.Parent.Parent.LegButton.LA2
LA3 = script.Parent.Parent.Parent.LegButton.LA3
placeholder = script.Parent.Parent.Parent.LegButton.placeholder
LA1Value = script.Parent.Parent.Parent.Parent.OutfitPriceFrame.totalPrice.LA1
LA2Value = script.Parent.Parent.Parent.Parent.OutfitPriceFrame.totalPrice.LA2
LA3Value = script.Parent.Parent.Parent.Parent.OutfitPriceFrame.totalPrice.LA3



script.Parent.MouseButton1Click:connect (function ()

playername = script.Parent.Parent.Parent.Parent.Parent.Parent.Name
player = Workspace:FindFirstChild(""..playername.."")
if player ~= nil then
  player:FindFirstChild("Pants").PantsTemplate = "http://www.roblox.com/asset/?id=479112778"
end
end)

script.Parent.MouseButton1Click:connect (function ()

    LA2.Visible = false
    LA1.Visible = false
    LA3.Visible = true

    LA2Value.Value = false
    LA2Value.Value = false
    LA3Value.Value = true

    placeholder.Visible = false
end)

Now i want the LAValue's to change a separate intbool value which i have attached a screenshot of

https://gyazo.com/ffa76b15135d290383958da3c7649f59

But the boolean values don't change when i try them in testing. This next script is supposed to add one value to a VALUE int

LA1 = script.Parent.LA1.Value
LA2 = script.Parent.LA2.Value
LA3 = script.Parent.LA3.Value

while true do 

if script.Parent.LA1.value == true then

    script.Parent.TOTAL.Value = script.Parent.TOTAL.Value + 130
else
    script.Parent.TOTAL.Value = 0 
end
if script.Parent.LA2.Value == true then
    script.Parent.TOTAL.Value = script.Parent.TOTAL.Value + 190
else
    script.Parent.TOTAL.Value = 0 
end
if script.Parent.LA3.Value == true then
    script.Parent.TOTAL.Value = script.Parent.TOTAL.Value + 220
else
    script.Parent.TOTAL.Value = 0
end
end

And then this last bit of code is supposed to display on the text label but it just breaks, I have tried work arounds. but with no luck. Any help and advice would be great.

game.StarterGui.MainMenu.OutfitPriceFrame.totalPrice.TOTAL.Changed (function()
    script.Parent.Parent.totalPrice.Text = script.Parent.TOTAL.Value
end)    

I'm very new to LUA but i know a few minor coding languages.