public function executeGetLinkedListItems()
{
$this->setLayout(false);
if (is_numeric($id = $this->getRequestParameter('id'))) {
$list = Lists::getChildListForItem($id);
}
if ($list) {
$items = Lists::getListitemsByListId($list->getListId());
}
foreach ($items as $item) {
$options .= "<option value='" . $item->getId() . "'>" . $item->getLabel() . "</option>";
}
return $this->renderText($options);
}