public function setPersParams($aParams)
    {
        $this->_aPersParam = $aParams;

        // serializing persisten info stored while ordering
        $this->oxorderarticles__oxpersparam = new \OxidEsales\Eshop\Core\Field(serialize($aParams), \OxidEsales\Eshop\Core\Field::T_RAW);
    }