How to detect changes in group role in real time?

I need to detect changes in a person's role in the group in real time. I have no idea how to do this. This code below checks the rank, however when my group role changed, it receives the old rank and not my new rank screwing it all up. If I was Trainee, if I then change into Supervisor the script still thinks I'm a Trainee. How do I fix this?

function AutoUpdateRank(player)
    wait(1)
    print("ATTEMPT TO LOAD RANK!!!!" .. player.Name)
    while true do
        print("Checking RANK!")
        local newRank = player:GetRoleInGroup(3262436)
        print(player.Name .. "RANK: " .. newRank)
        if player:WaitForChild("leaderstats").Rank.Value ~= newRank then
            print("RANK CHANGED!!!!!")
        end
        player:WaitForChild("leaderstats").Rank.Value = newRank 
        wait(math.random()*10)
    end
end

game.Players.PlayerAdded:Connect(AutoUpdateRank)

for key, player in ipairs(game.Players:GetPlayers()) do
    AutoUpdateRank(player)
end