ObbyScript:20: attempt to get length of field 'TempConte stants' (a userdata value)?

I am scripting a game points system but it's not working and the error 12:02:10.739 - Workspace.CurrentObby.Obby1.ObbyScript:20: attempt to get length of field 'TempContestants' (a userdata value) shows. Here is my script

Obby = script.Parent
Functions = require(script.Functions)

Obby.End.Touched:connect(function (hit)
	local hum = hit.Parent:FindFirstChild("Humanoid")
	if hum then
		local player = game.Players:GetPlayerFromCharacter(hum.Parent)
		if player then
			Functions:AddWinner(player)
		end
	end
end)

for i = Obby.ObbyInfo.Time.Value, 1, -1 do
	if i == 1 then
	     _G.Msg("The current game will end in".. tostring(i) .. "seconds")
	else  
	     _G.Msg("The current game will end in".. tostring(i) .. "seconds")
	end
	if #Obby.ObbyInfo.TempContestants <= 0 then
		break
	end
	wait(1)
end


Obby.ObbyInfo.Finished.Value = true

Please help asap :)

Thanks!