TalkAction God summon script

[shoxsz]

I downloaded a server for tibia 9.6 version and created a GOD but this server do not have the commands for the god, so i'm trying to create them, but i'm new in otserver programing, i'm trying to create the command(talkaction): /m to summon creatures, that's ok, some research on google to explain some things have worked well, but now i got a problem that can't be solved on the web: how can i get parameters for the command? when i use only '/m' the script run with 'param'(from onSay) null, when i use '/m Demon' the command do not run, here's what i've done:

function onSay(cid, words, param)

    usage = "/m creature_name [, count]."
 
    -- I couldn't see the type of 'param': can be an array or just a string, while i don't know, i'm assuming that it is an array(non zero based)
 
    -- No parameters?
    if param == nil then
        doPlayerSendTextMessage(cid, MESSAGE_STATUS_CONSOLE_BLUE, usage)
    else
        -- Check if is god
        if getPlayerGroupId(cid) == 3 then
            -- Check if is a valid creature
            id = getCreatureByName(param[1])
            if id ~= nil and isCreature(id) then
                -- Loop to summon the creatures
                for i = 0, param[2] do
                    position = getPlayerPosition(cid)
                    --Only increment 1 on x, the game will find the right place to put the creature
                    position.x = position.x+1
                    doSummonCreature(param[1], position)
                end
            else
                doPlayerSendTextMessage(cid, MESSAGE_STATUS_CONSOLE_BLUE, "The creature ".. param[1] .." does not exist.")
            end
        else
            doPlayerSendTextMessage(cid, MESSAGE_STATUS_CONSOLE_BLUE, "You are not allowed to use this command.")
        end
    end
 
    --This code here is for test the value of 'param'
    --doPlayerSendTextMessage(cid, MESSAGE_STATUS_CONSOLE_BLUE, param)
 
end

the talkactions.xml

<talkaction words="/m" script="god_summon.lua"/>

if someone can help me i'll thank you.