[Solved] How to retrieve allowed values of a TV?

<?php
global $modx;
$output = '';

$createSelectForm =  (isset($createSelectForm)) ? true : false;
$property = (isset($property)) ? $property : 'DEFAULT';
$defaultPosition = (isset($defaultPosition)) ? $defaultPosition : 'DEFAULT';

$result = $modx->db->select("elements", $modx->getFullTableName("site_tmplvars"), "name='" . $property . "'");

if($modx->db->getRecordCount($result))
{
     $row = $modx->db->getRow($result);
     $resultString = $row['elements'];

     $propertiesArray = explode("||", $resultString);

     if ($createSelectForm) {
        // creating <option>entries</option>

        $output .= "<option value=''>" . $defaultPosition . "</option>";
        foreach ($propertiesArray as $property) {
            $output .= '<option>' . $property . '</option>';
        }
     } else {
        // creating plain list
        foreach ($propertiesArray as $property) {
            $output .= $property . ', ';
        }

     }
}
else
{
     $output .= 'EMPTY';
}

return $output;