private function getParentId()
    {
        $posted = $this->appRequest->getPostValue();
        if (isset($posted['customer'][ABlock::TMPL_FLDGRP][ABlock::TMPL_FIELD_PARENT_MLM_ID])) {
            $mlmId = $posted['customer'][ABlock::TMPL_FLDGRP][ABlock::TMPL_FIELD_PARENT_MLM_ID];
            $found = $this->daoDwnlCust->getByMlmId($mlmId);
            if ($found) {
                $result = $found->getCustomerRef();
            }
        } else {
            $result = null;
        }
        return $result;
    }