How can I make it so that this "Script" runs every time a player changes his team with an admin?

So this only works 1 time. And that is when a player joins but I want to make it so that when a player changes his/hers team to the teamcolor "Earth green" with a admin then this script should be activated

game.Players.PlayerAdded:Connect(function(player)
    player.Changed:Connect(function(property)
        if property == "TeamColor" then
            if player.TeamColor == BrickColor.new("Earth green") then
			player.PlayerGui:WaitForChild("ScreenGui").Spawn.Disable.Visible = true
            end
        end
    end)
end)

This is a server script. I may suck at explaining but I atleast tried