[SOLVED]tool activation only makes frame visible once?

When i activate the tool and any time it is suppose to make a frame visible, it doesn't work?

plr = script.Parent.Parent.Parent
char = plr.Character
hum = char.Humanoid
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local enabled = true
local delaytime = plr:WaitForChild("delay")
local defaultdelay = 10
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local storage = game.ServerStorage
local crates = storage.crates
local remotes = storage.remotes
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script.Parent.Activated:Connect(function()
    if enabled == true then
        print("delay ok")
        if hum.FloorMaterial == Enum.Material.Plastic then
            print("plastic")
        enabled = false
        wait(defaultdelay)
        enabled = true
        else
            print("not plastic")
            plr.PlayerGui.DeployWarning.Frame.Visible = true
        end
    else
        print("delay not ok")
        plr.PlayerGui.DelayWarning.Frame.Visible = true
    end
end)