Не срабатывает addOne

<?xml version="1.0" encoding="UTF-8"?>
<model package="OrgEnter" baseClass="xPDOObject" phpdoc-package="orgenter" phpdoc-subpackage="" platform="mysql" defaultEngine="MyISAM" version="1.1">
    <object class="NamesList" table="names_list" extends="xPDOSimpleObject">
       <field key="smallname" dbtype="varchar" precision="255" phptype="string" null="false" default=""/>
      <composite alias="Names" class="Names" local="id" foreign="id" cardinality="one" owner="owner" />
    </object>    
    <object class="Names" table="names" extends="xPDOSimpleObject">
        <field key="longname" dbtype="varchar" precision="255" phptype="string" null="false" default=""/>
         <index alias="longname" name="longname" primary="false" unique="true" type="BTREE">
                <column key="longname" collation="A" null="false" />
        </index>
        <composite alias="NamesList" class="NamesList" local="id" foreign="id" cardinality="one" owner="foreign" />	
    </object>
</model>

$orgnamesList= $this->modx->newObject('NamesList');
					 $orgnamesList->set('smallname',$fields['smallname']);
					 $orgNames = $this->modx->newObject('Names');
					 $orgNames->set('longname',$fields['longname']);
     			        	 $orgnamesList->addOne($orgNames); 
					 $orgnamesList->save();