Custom Player List updatescript not working?

Hi, I'm working on a custom player list GUI, but I'm having trouble setting the text's in the labels to the players name. In total, it can hold 30 players, uses a scrollframe, and is suppose to update when a player joins/leaves the game. I'm using filteringenabled and although I was able to get it semi-working when the script was in the serverscriptservice when I move it to the actual GUI it doesn't work. I rewrote the script several times and no matter what I do, for some reason it doesn't work while in the GUI. Here's the script:

gui = script.Parent
frame = gui.Frame
labels = frame:GetChildren()
players = game.Players:GetPlayers()

function updatelist()
for a = 1,30 do
num = a

for b,p in pairs(players) do
if b == num then
for c,l in pairs(labels) do
if l.Name == ("Name "..num) then
l.Text = p.Name
end
end
end
num2 = b
end

if num > num2 then
for d,l in pairs(labels) do
if l.Name == ("Name "..num) then
l.Text = " "
end
end
end

end
end

game.Players.PlayerAdded:connect(updatelist)
game.Players.PlayerRemoving:connect(updatelist)

Thanks for the help!