Custom Command syntax (to an OpenVMS system)

I've got an openVMS system that I FTP into periodically.... OpenVMS has a file versioning system that is pretty interesting. When I log in with SmartFTP I will see:
myfile.txt;12

So that is telling me that myfile.txt is at version 12. Underneath of that there may be other versions. I wanted to do a custom command to look at that, which if I log in manually would be:

dir myfile.txt;*

Which means show me all versions so that might return:
myfile.txt;3
myfile.txt;4
myfile.txt;12

But I have not been able to get this to work. I tried
dir %ff;*
SITE dir %ff;*
SITE ls %ff;*

etc.... any thoughts?

Thanks,
=Blain