Form designer: How to display a link to a file stored in a process data?

This article explains how to display a download link to a file stored in a process data.
For example, in a first action, the user has to upload a file. The file is stored in a process data (via mapping).
In a second action you want to display in the web form a link to this file.

Please find below the solution:

  1. Activate the WorkflowFileUpload on the Attachment tool

  1. In the first action, send the uploaded file into a process data

  1. In the second action, retrieve the file from the corresponding process data