Attaching file

Hello,

I have successfully taken people through an on-line contract signing process.
I am successfully sending them an email containing a link to the signed contract.
I am also successfully using File Manipulation to download a copy to my own local computer, for my owjn records.

My preference would be to attach the contract to the email (rather than only providing a link.
However, I cannot find the correct value to put in "Entered Value" of the SendEmail or Universal Email attachments menu.

And I also cannot select the "Submitted File" option in that same menu because no matter what values I put in the Form, that option remains greyed out in Send Email, and so I cannot select it.

Thank you.

I attach the file.