Set Variable when uploading WF in Server

We have a WF that needs a Fixed Variable value to be set when the file is uploaded to the server.
Instead of creating a process in PS changing the value manually and then generate the import file, could this be set when the file is being uploaded or when a tenant is being assigned to execute the WF.
We do not want to use the credential for this matter. A similar function like credential for a single variable that can be hidden would be great.
Any ideas

Hi Willem,

You can configure variable in “Workflow Parameter” of workflow/process with Runtime-false option and use the same variable in your workflow/process.

When you upload the workflow on the server, it will ask you to configure the value for this variable and use the same value for execution for all the upcoming requests.