Remove Attached File

Hello All,

I have a form that the end user can attach multiple files to the form and that is annotated into a list box. I know how to remove all the attachments and already have that set on a button. What I am wanting to do (and just finding no way to do it) is select a single file from the list box and remove just that file when the button is clicked.

Any suggestions would be wonderful.

Thank you!