Lua Own Function don't work

[Perun]

Hi!
My english isn't very good but.. ;D

I created 3 functions:

function isTournamentOn()
local wynik;
	local storage = getGlobalStorageValue(9812);
	if storage == 2 then
	wynik = true;
		else
			wynik = false;
			end
	return wynik;
end

function getTournamentPlayers()
local players = {}
	return players
end

function addPlayerToTournament(cid)
if isPlayer(cid) then
	for i, pid in ipairs(getTournamentPlayers()) do
	table.insert(players, getPlayerName(cid))
end
	return true
	end
	end

The first function work good, but 2 and 3 don't work.
When i try use 3 function i don't see any error's but it don't insert playername to table from function nr 2 ;/
Please help!