Gui only pops up only once in a touch-fired script?

I'm trying to make a GUI pop up when an invisible brick is touched, and lets people of a certain rank through. The rank part works fine, but the GUI script only runs once. I also have MADE SURE the GUI is destroyed in some way, and doesn't stay there out of sight. My code:

local config = script.Parent.Configuration
script.Parent.Touched:connect(function(part)
    if part.Parent and game:GetService('Players'):GetPlayerFromCharacter(part.Parent) then
        local player = game:GetService('Players'):GetPlayerFromCharacter(part.Parent)
        if player:GetRankInGroup(config.GroupId.Value) >= config.RankId.Value then  
            if not player.PlayerGui:FindFirstChild("MakeGui") then
                script.Parent.MakeGui:Clone().Parent = player.PlayerGui
            end
            script.Parent.CanCollide = false
            wait(.4)
            script.Parent.CanCollide = true
        end
    end
end)

Please help!