User Group Settings

<?php
$username = $hook->getValue('username');
if(empty($username)) {
 $hook->addError('user','Username field empty');
 return false;
}
$usrobject = $modx->getObject('modUser',
      array('username' => $username));
$userid = $usrobject->get('id');
if(empty($userid)) {
 $hook->addError('user','Error getting user object');
 return false;
}
//Create the user image dir
$assetspath = $modx->getOption('assets_path');
mkdir($assetspath.'images/'.$username);
//Add the user setting
$setobject = $modx->newObject('modUserSetting');
$setary = array(
 'user' => $userid,
 'key' => 'filemanager_path',
 'value' => '/assets/images/'.$username,
 'area' => 'File System'
);
$setobject->fromArray($setary,'',true);
$setobject->save();

//Clear the cache
$modx->cacheManager->refresh(array('system_settings' => array()));
return true;