(Roblox) Script of Unknown Origin

local config = {

        rate            = 0.25,  -- 2.0 = 2x faster than normal.
        un_equip        = 7697, -- Item ID of the UN-Equipped ring.
        equip           = 7708,  -- Item ID of the Equipped ring.
        level           = 13

}

function onDeEquip(cid, item, slot)
        doPlayerSetExperienceRate(cid, 1.0)
        doPlayerSendTextMessage(cid, MESSAGE_INFO_DESCR, "Your extra experience rate has ended.")
        doSendMagicEffect(getThingPos(cid), 32)
        doTransformItem(item.uid, config.un_equip)
        return true
end

function onEquip(cid, item, slot)
if(getPlayerLevel(cid) >= config.level) then
        if getConfigValue("experienceStages") == "yes" then
           doPlayerSetExperienceRate(cid, getExperienceStage(getPlayerLevel(cid))*0.001)
        else
           doPlayerSetExperienceRate(cid, getConfigValue("rateExperience")*0.25)
        end
        doPlayerSendTextMessage(cid, MESSAGE_INFO_DESCR, "Your extra experience rate has been activated! It is now: " .. config.rate .. "x doubled your former experience rate.")
        doSendMagicEffect(getThingPos(cid), 29)
        doTransformItem(item.uid, config.equip)
        doDecayItem(item.uid)
        return true
else
        doPlayerSendTextMessage(cid, MESSAGE_INFO_DESCR, "You need " .. config.level .. " level" .. " to wear this item.")
        return false
end
end