Lua Daily quest by account

[natanal99]

So my problem is simpe i have this script made by @Limos i think, and i want to limit it by account.
By now each player can do the quest each day, i want that each account can do the qeust for each day, is it possible?

local config = {
     storage = 24003,
     exstorage = 24004,
     days = {
         ["Monday"] = {
             {itemid = 11198, count = {1}}
         },
         ["Tuesday"] = {
             {itemid = 11198, count = {1}}
         },
         ["Wednesday"] = {
             {itemid = 11198, count = {1}}
         },
         ["Thursday"] = {
             {itemid = 11198, count = {1}}
         },
         ["Friday"] = {
             {itemid = 11198, count = {1}}
         },
         ["Saturday"] = {
             {itemid = 11198, count = {2}}
         },
         ["Sunday"] = {
             {itemid = 11198, count = {2}}
         }
     }
}

function onUse(cid, item, fromPosition, itemEx, toPosition)
                local x = config.days[os.date("%A")]
                if getPlayerStorageValue(cid, config.storage) == tonumber(os.date("%w")) and exhaustion.check(cid, config.exstorage) then
                                return doPlayerSendCancel(cid, "The chest is empty, come back tomorrow for a new reward.")
                end
                local c = math.random(#x)
                local info, count = getItemInfo(x[c].itemid), x[c].count[2] and math.random(x[c].count[1], x[c].count[2]) or x[c].count[1]
                if count > 1 then
                                text = count .. " " .. info.plural
                else
                                text = info.article .. " " .. info.name
                end
                local itemx = doCreateItemEx(x[c].itemid, count)
                if doPlayerAddItemEx(cid, itemx, false) ~= RETURNVALUE_NOERROR then
                                doSendMagicEffect(getThingPos(cid), CONST_ME_POFF)
                                text = "You have found a reward weighing " .. getItemWeight(itemx) .. " oz. It is too heavy or you have not enough space."
                else
                                text = "You have received " .. text .. "."
                                setPlayerStorageValue(cid, config.storage, tonumber(os.date("%w")))
                                exhaustion.set(cid, config.exstorage, 24*60*60)
                end
                doPlayerSendTextMessage(cid, MESSAGE_INFO_DESCR, text)
                return true
end