iOS FTP

[Jim sims]

I found an example of using ftp on iOS and tested it but I keep getting an
"invalid server" error as the result.

In the simulator I am using the equivalent of the following

         *put* "12345" into url ("ftp://administrator:password@
ftp://xxx.xxx.xxx.xxx/aaazzz11.txt")



Can I use ftp with the iOS simulator?

Should the example above work (provided the server, pw and user are
correct)?

TIA
sims