Why can't I get a value from the loading gui?

local value = nil
local TeleportService = game:GetService("TeleportService")
TeleportService.LocalPlayerArrivedFromTeleport:connect(function(LoadingGui)
    value = LoadingGui.Test.Value
end)
print(value)

When the script runs print it still outputs nil. How can I make it so it gets the proper value (10) from the custom loading gui?