Hello, 

About upload a file Joget works like that. When the form upload a file, this is stored temporality on TempDir (defined on configuration by default is on <<Joget Installation>>/wflow/app_tempfile). When the form is submitted is moved to UploadDir (defined on configuration by default is on <<Joget Installation>>/wflow/app_formuploads).

Now, in the plugin code you can access to the temporal files using FormRowSet ou FormRow (I don't remember which one) with .getTempFilePathMap()

I think with that you can read the files that you need.

I hope that helps you 

Thank you Angel PEREZ , accessing these locations was ended up in 404 (possibly due to credentials required again by plugin). 

Although code sample at "FileUtil - Knowledge Base for DX 7 - Joget | COMMUNITY" help to fix my issue. 

By the way, how to clean files from location you mentioned? Is there any retention policy followed by Joget? Appreciate any suggestions. 

<<Joget Installation>>/wflow/app_tempfile) and
<<Joget Installation>>/wflow/app_formuploads 

Best Regards