Teleport back and forth script not teleporting?

I am making a round based game that needs players to teleport to and from maps as rounds begin/end but this won't work.

function teleportPlayers()
	local players = game.Players:GetPlayers()
	for i,v in pairs(players) do
		v.Character.HumanoidRootPart.CFrame = currentmap:FindFirstChild(chosenmap.Value).Spawn.CFrame
	end
end

function teleportBack()
	local players = game.Players:GetPlayers()
	for i,v in pairs(players) do
		v.Character.HumanoidRootPart.CFrame = spawner.CFrame
	end
end