Why isn't my timer script isn't working?

I am working on a timer script, but when I try to change a hint's text or a gui text it won't work, in this case I am using a hint, but I have tried with a gui and i still fail, I have even tried strings.

hint = Instance.new("Hint")
hint.Parent = game.Workspace
guilabel = hint.Text
waiting = game.ServerStorage.waiting.Value
intermission = 30
gametimer = 60
gametype = game.ServerStorage.gametype.Value
wait(1)
guilabel = "text"
while true do
    wait(1)
    if waiting == true then
        if intermission > -1 then
            guilabel = "Intermission " ..intermission --making hint say "Intermission (number)"
            intermission = intermission - 1
            print(intermission) --printing it to test
        else
            waiting = false
            intermission = 30 --reseting the intermission
        end 
    elseif gametype == 1 then
        if gametimer > -1 then
            guilabel = gametimer --same thing here
            gametimer = gametimer - 1
            print(gametimer)
        else
            waiting = true
            gametimer = 60 -- reseting
        end
    end
end