Hello Mark and welcome!
You can ask FTP Client app developer Arie if he might have some ideas for this; just follow this link and just post it there (hit the blue reply button below the very last post to post a question):
https://community.homey.app/t/app-pro-ftp-client-control-ftp-servers-through-a-directory-based-ui-in-the-homey-app-or-web-app/70876
