file_upload_form in custom module

Hello,

Is there anyway to use the file_upload_form module in some custom module, or should I create my own upload functions ?

When I try to use it as in the Publish class, the form popup load correctly, but when I try to upload some files, it display an error like

no field were set

I’m using this code to create the popup link :

<?php
$DSP->body .= $DSP->anchorpop(BASE.AMP.'C=publish'.AMP.'M=file_upload_form'.AMP.'field_group='.$field_group.AMP.'Z=1', $up_img.' '.$LANG->line('upload_file'), '520', '600');
?>

I would like to use the features upload and resize, then give back the uploaded file path to my custom module.

Please help 😊