UserImportBase::updateEmptyXmlId

public function updateEmptyXmlId($id, $xmlId)
{
	$result = false;

	if(intval($id)>0)
	{
		$user = UserTable::getById($id);
		if($fields = $user->fetch())
		{
			if($fields['XML_ID'] == '' && $fields['XML_ID'] <> $xmlId)
			{
				$user = new CUser;
				$result = $user->Update($id, array('XML_ID'=>$xmlId), true);
			}
		}
	}

	return $result;
}