Galera eu fis o comando sertinho mas ele ta dando um erro na Linha 15 Não sei por que

Script V

local MonsterName = "horse"
local MaximoSummon = 1

function onSay(cid, words, param, channel) 
   if(param == '') then
     doPlayerSendTextMessage(cid, MESSAGE_STATUS_CONSOLE_BLUE, "Command param required.")
    return true
    end
    if param == "on" then
       local summons = getCreatureSummons(cid)
       if(table.maxn(summons) < MaximoSummon) then
               doConvinceCreature(cid, doCreateMonster(MonsterName, getCreaturePosition(cid)))
               end
    elseif param == "bye" then
                for _, pid in ipairs(summons) do
               doRemoveCreature(pid)
           end
       end
       return FALSE
end

To con duvida oque eu posso colocar colocar

erro

[19/06/2010 12:48:30] Lua Script Error: [TalkAction Interface] 
[19/06/2010 12:48:30] data/talkactions/scripts/animal.lua:onSay

[19/06/2010 12:48:30] data/talkactions/scripts/animal.lua:15: bad argument #1 to 'ipairs' (table expected, got nil)
[19/06/2010 12:48:30] stack traceback:
[19/06/2010 12:48:30] 	[C]: in function 'ipairs'
[19/06/2010 12:48:30] 	data/talkactions/scripts/animal.lua:15: in function <data/talkactions/scripts/animal.lua:4>

(for _, pid in ipairs(summons) do) tente retirar a virgula ou esse _!

"summons" é nulo.

Você colocou "local summons" dentro do if, tem q ser fora.

local MonsterName = "horse"
local MaximoSummon = 1

function onSay(cid, words, param, channel) 
   if(param == '') then
       doPlayerSendTextMessage(cid, MESSAGE_STATUS_CONSOLE_BLUE, "Command param required.")
       return true
   end
   local summons = getCreatureSummons(cid)
   if param == "on" then
       if(table.maxn(summons) < MaximoSummon) then
           doConvinceCreature(cid, doCreateMonster(MonsterName, getCreaturePosition(cid)))
       end
   elseif param == "bye" then
       for _, pid in ipairs(summons) do
           doRemoveCreature(pid)
       end
   end
   return FALSE
end