Help Retrieving User Setting

<?php
/* allows access only to the tree_root_id resource and its children */
$tr = $modx->getOption('tree_root_id');
if(is_numeric(strrpos($tr,','))){
   $tr = explode(',',$tr);
}else{
    $tr = array($tr);
}
$allowed = array();
foreach($tr as $t){
    $children = $modx->getChildIds($tr);
    $allowed = array_merge($allowed,$children);
}
/* add the tree_root_id resource the array -- remove if they shouldn't access the parent */
$allowed = array_merge($allowed,$tr);

if ( ! in_array($modx->resource->get('id'), $allowed)) {

   $modx->sendRedirect('http://www.domain.com/manager/index.php?a=30&id='.$allowed[0]
                        );
}

   $uid = $modx->user->get('id');
     $properties = array(
        'fk' => $uid, // user id
        'key' => 'tree_root_id',
        'name' => 'treerootid',
        'description' => 'Local A User To This ID',
        'xtype' => 'textfield',
        'namespace' => 'accountinfo',
        'value' => $doc->get('id'),
    );
    $response = $modx->runProcessor('system/setting/create', $properties);
    if ($response->isError()) {
        return $response->getMessage();
    }
    $setting = $response->getObject();
     
    // refresh cache
    $modx->cacheManager->refresh(array(
        'system_settings' => array(),
    ));

Array
(
    [fk] => 1
    [key] => tree_root_id
    [name] => treerootid
    [description] => Local A User To This ID
    [xtype] => textfield
    [namespace] => accountinfo
    [value] => 13699
)

<?php
/* @var $setting modUserSetting */
/* @var $modx modX */

$userId = $modx->user->get('id');  // or $user->get('id') if it's in a plugin

$setting = $modx->getObject('modUserSetting', array('key' => 'tree_root_id', 'user => $userId));

if (empty ($setting)) {
    $setting = $modx->newObject('modUserSetting');
    $setting->fromArray(array(
       'user' => $userId;
       'key' => 'tree_root_id',
       'value' => '13699',
       'xtype' => 'textfield',
       'namespace' => 'accountinfo',
       'area' => 'accountinfo',
      ), '', true, true);

    $setting->save();
} else {
    $setting->set('value', '13699' );
    $setting->save();
}