Trouble with chmod after upload

I'm using upload script, but after upload files are 600 instead 644, I tried put somewhere this bit of code:

$chmod = chmod($path, 0766); //set the appropriate permissions.

PHP:

but i'm not sure where exactly it should be in this part of script's code pasted below:

<?php
/**
* Menu-callback for JavaScript-based uploads.
*/
function yui_editor_image_upload() {
  header("content-type: text/html"); // the return type must be text/html
  $response = null;
  $path = file_directory_path();

  //Append trailing slash to path if not there
  if (! (substr($path, -1) == '/')) {
    $path .= '/';
  }
  $path .= 'images';
  $file = file_save_upload('upload', array(), $path, FILE_EXISTS_REPLACE);
  if (!$file) {
    $response->status = 'Error Reading Uploaded File.';
    print drupal_to_js($response);
    exit;
  }
 
  $response->status = 'UPLOADED';
  $response->image_url = $file->filepath;

  print drupal_to_js($response);
  exit;
}
?>

PHP:

 

<?php
/**
* Menu-callback for JavaScript-based uploads.
*/
function yui_editor_image_upload() {
  header("content-type: text/html"); // the return type must be text/html
  $response = null;
  $path = file_directory_path();

  //Append trailing slash to path if not there
  if (! (substr($path, -1) == '/')) {
    $path .= '/';
  }
  $path .= 'images';
  $file = file_save_upload('upload', array(), $path, FILE_EXISTS_REPLACE);
  if (!$file) {
    $response->status = 'Error Reading Uploaded File.';
    print drupal_to_js($response);
    exit;
  } else $chmod = chmod($file->filepath, 0766); //set the appropriate permissions. 
 
  $response->status = 'UPLOADED';
  $response->image_url = $file->filepath;

  print drupal_to_js($response);
  exit;
}
?>

Code (markup):

$path will only change the directory chmod from the looks of it, so I changed it to $file->filepath

 

Just before this
$response->status = 'UPLOADED';

 

Thanks a lot, Kyosys ;-)