Why won't this GUI script work?

I AM SO SICK OF ALL YOU PEOPLE -1 ON MY POSTS! ITS RUDE! IM JUST TRYING TO ASK A QUESTION HERE!

ar = script.Parent.AdsRunning
dt = script.Parent.AD_MAIN.default_t
ab = script.Parent.AD_MAIN.ad_box
a1 = script.Parent.Ad1
a2 = script.Parent.Ad2
a3 = script.Parent.Ad3
fa = script.Parent.Ad4
if ar ==true then
    dt.TextTransparency = 1
    ab.ImageTransparency = 0
    ab.Image = a1.Value
    wait(5)
    ab.Image = a2.Value
    wait(5)
    ab.Image = a3.Value
    wait(5)
    ab.Image = fa.Value
    wait(5)
end

I've tested it over and over, but it won't work. Please help me out here.