does Box support file deletion/rename with ftps?

Using curl to upload files via ftps is fine:

 curl -s -S -1 --disable-epsv --ftp-skip-pasv-ip -u "boxapiuser@corp.untd.com:XXXXX" --ftp-ssl --ftp-create-dirs --upload-file "empty" "ftps://ftp.box.com/testdir-outbound/empty.txt"

But I cannot rename or delete files:

 curl -s -S -1 --disable-epsv --ftp-skip-pasv-ip -u "boxapiuser@corp.untd.com:XXXXX" --ftp-ssl --ftp-create-dirs -Q "-rm  '/testdir-outbound/empty.txt" "ftps://ftp.box.com/testdir-outbound/"

gives QUOT string not accepted rm...

and same thing with rename:

gives QUOT string not accepted rename...

Does ftp.box.com not support these commands?