[MODS] Create Portal with players limit!

<?xml version="1.0" encoding="UTF-8"?>
<mod name="Portal" version="2.0" enabled="yes">
    <description>
        ---makes a portal to a location for a specified number of people
        ex. !portal x,y,z,amountofpeople
    </description>
<talkaction words="!portal" access="5" event="script"><![CDATA[
function onSay(cid, words, param)
    param = param.explode(param, ',')
    if param then
        teleport = doCreateTeleport(1387, {x=param[1], y=param[2], z=param[3]}, getPlayerPosition(cid))
        doItemSetAttribute(teleport, "description", 'The portal may enter '..param[4]..' people left.')
        doItemSetAttribute(teleport, "aid", 100+param[4])
    else
        doPlayerSendCancel(cid, "You must set param.")
    end
    return TRUE
end  
]]></talkaction>
<movement type="StepIn" itemid="1387" event="script"><![CDATA[
function onStepIn(cid, item, position, fromPosition)
    if item.actionid > 100 then
        doItemSetAttribute(item.uid, "description", 'The portal may enter '..(item.actionid-101)..' people left.')
        doItemSetAttribute(item.uid, "aid", item.actionid-1)
    elseif item.actionid == 100 then
        doBroadcastMessage("The Portal has ran out of energy and collapsed.", MESSAGE_EVENT_ADVANCE) 
        doSendMagicEffect(position, 2)
        doRemoveItem(item.uid, 1)
    end
    return true
end
]]></movement>
</mod>

if param[1] ~= nil and param[2] ~= nil and param[3] ~= nil and param[4] ~= nil then