Will this work??

I have a script, that requires sufficient credit in order to pass through a door. But it should only charge once:

script.Parent.Touched:connect(function(player) --Door gets touched
    humanoid = player.Parent:FindFirstChild("Humanoid") --If it's the player that touched the door
    if humanoid ~= nil then
        person = game.Players:FindFirstChild(player.Parent.Name)
        touched = script.Parent:FindFirstChild(player.Parent.Name)
        if person ~= nil  and  touched == nil then
            person.leaderstats.Admins.Value = person.leaderstats.Admins.Value - 1 --Decreases the credits
            a = Instance.new("StringValue", script.Parent)
            a.Name = player.Parent.Name
            script.Parent.CanCollide = false
            wait(2)
            script.Parent.CanCollide = true
        elseif touched ~= nil then
            script.Parent.CanCollide = false
            wait(2)
            script.Parent.CanCollide = true
        else humanoid.Health = 0 
        end
    end
end