media webcam filename as node title

Hi,
I just want to know how to change filename to node title, when saving snap shot image?
I've notice the code in media_webcam.module in line 264

// Attempt to save the image.
      if ($file->filepath = file_save_data($base64, $path .'/media-webcam-image'. time() .'.jpg')) {
        global $user;
        $file->uid = $user->uid;
        $file->filename = basename($file->filepath);
        $file->filemime = file_get_mimetype($file->filename);
        $file->source = 'media_webcam_save_image';
        $file->destination = $file->filepath;
        $file->filesize = strlen($image);
        $file->timestamp = time();
 

i change it to

// Attempt to save the image.
      if ($file->filepath = file_save_data($base64, $path .'/'. $node->title .'.jpg')) {
        global $user;
        $file->uid = $user->uid;
        $file->filename = basename($file->filepath);
        $file->filemime = file_get_mimetype($file->filename);
        $file->source = 'media_webcam_save_image';
        $file->destination = $file->filepath;
        $file->filesize = strlen($image);
        $file->timestamp = time();
 

but just shows a empty filename to .jpg.

Thank you,