[solved] File upload with formit

&validate=`nomination_file:required`

(filename).jpg||image/jpeg||/tmp/php5/phpFi8L01||0||657369

// initialize output;
$output = true;
  // get the current user name to create the file name as  
$userName = $modx->user->get('username');

// valid extensions
$ext_array = array('jpg', 'jpeg', 'gif', 'png');

// create unique path for this form submission
$uploadpath = 'assets/uploads/';

// you can create some logic to automatically
// generate some type of folder structure here.
// the path that you specify will automatically
// be created by the script if it doesn't already
// exist.

// EXAMPLE:
// this would put all file uploads into a new,
// unique folder every day.
// $uploadpath = 'assets/'uploads/'.date('Y-m-d').'/';

// get full path to unique folder
$target_path = $modx->config['base_path'] . $uploadpath;

// get uploaded file names:
$submittedfiles = array_keys($_FILES);

// loop through files
foreach ($submittedfiles as $sf) {

  // Get Filename and make sure its good.
  $filename = basename( $_FILES[$sf]['name'] );

  // Get file's extension
  $ext = pathinfo($filename, PATHINFO_EXTENSION);
  $ext = mb_strtolower($ext); // case insensitive

  // is the file name empty (no file uploaded)
  if($filename != '') {

    // is this the right type of file?
    if(in_array($ext, $ext_array)) {

      //create file called the user name + pic
      $filename = $userName . "-pic".'.'.$ext  ;

      // full path to new file
      $myTarget = $target_path . $filename;

      // create directory to move file into if it doesn't exist
      mkdir($target_path, 0755, true);
  if(file_exists($myTarget)) {
      chmod($myTarget,0755); //Change the file permissions if allowed
      unlink($myTarget); //remove the file
  }

      // is the file moved to the proper folder successfully?
      if(move_uploaded_file($_FILES[$sf]['tmp_name'], $myTarget)) {
        // set a new placeholder with the new full path (if you need it in subsequent hooks)
        $hook->setValue($sf, $uploadpath . $filename);
        // set the permissions on the file
        if (!chmod($myTarget, 0644)) { /*some debug function*/ }

          } else {
        // File not uploaded
        $errorMsg = 'There was a problem uploading the file.';
        $hook->addError($sf, $errorMsg);
        $output = false; // generate submission error
      }

      } else {
      // File type not allowed
          $errorMsg = 'Type of file not allowed.';
      $hook->addError($sf, $errorMsg);
      $output = false; // generate submission error
        }

  // if no file, don't error, but return blank
  } else {
      $hook->setValue($sf, '');
  }

}

return $output;

$hook->setValue($sf, '');

//$hook->setValue($sf, '');