FileattachmentUpload - Incident Id not posting to custom controller

Summary

Incident Id is not being sent in $_POST data to custom controller

Content

Hi I have a custom widget form that needs file upload capability - simple we would all think!

I have tried using:

• FileattachmentUpload widget
• custom widget that extends FileattachmentUpload
• simple input field of type=file

For some reason none of these options will pass the incident ID on the form in the $_POST data to the custom controller. 

For example (a simple one) I have a widget: view.php has say the following code:

<form id="rn_smeUpload1" method="post" enctype="multipart/form-data" action="/cc/Webform_SME_Ctl/upload/">