[Lua] (LuaInterface::luaGetThingPosition) Thing not found HELP!

[Leyenda]

Hey there, im making a talkaction that shows a Text Dialog ONLY if the player is on some specific positions, but i get this error on the server log: (LuaInterface::luaGetThingPosition) Thing not found
I dont know whats wrong.. the "thing" is the player.. heres the code

local positions = {
	{x = 533, y = 511, z = 7}, 
	{x = 607, y = 512, z = 7}, 
	{x = 488, y = 470, z = 7}, 
	{x = 558, y = 470, z = 7}
}
local ActualPos = getCreaturePosition(cid)
function onSay(cid, words, param, channel)
	if ActualPos == positions then
			doShowTextDialog... bla bla bla lots of letters in here
	end
end

 

[Bogart]

for x = 1 to #positions do
	if actualPos == positions[x] then
		bla bla bla
	break;
	end
end

 

[Leyenda]

Thank you very much! ^_^