function Player:onGainExperience(source, exp, rawExp)
    if not source or source:isPlayer() then
        return exp
    end

    if CASTEXP[self:getName()] then
        if CASTEXP[self:getName()] <= os.time() then
            exp = (exp * CASTEXP_PERCENT) + exp
            self:sendTextMessage(MESSAGE_EVENT_ADVANCE, 'Voce recebeu mais experiencia por manter o cast aberto.')
        end
    end

    return exp
end