public function getRefObject($objName)
    {
        // see if there is such object in the ObjReferences
        $objRef = $this->objReferences->get($objName);
        if (!$objRef)
            return null;

        // apply association on the object
        // $assc = $this->EvaluateExpression($objRef->association);
        // get the object instance
        $obj = Openbizx::getObject($objName);
        $obj->setAssociation($objRef, $this);
        return $obj;
    }