I think you can use Open URL for this where the expression you use as a parameter evaluates as the text you would use to do the FTP in a web browser's URL box.
There are plugins that facilitate FTP transfers. http://filemaker-plugins.com/features/ftp/
MooPlug is free and will http://mooplug.com/features
Download Files from FTP
- Download files from an FTP server.
Upload Files by FTP
- Upload a file from your computer to a FTP server.
- Download Files from FTP
Thanks guys. I've managed to get a batch script to run on PC from within FileMaker and am using Smart folders on Mac to get the job done. Not the best route but meets my needs for the short terms. I'm looking into plug-ins but just need to see they'll do th ejob for me.