Select the port to be used for communications with the FTP server.
First available in version 3.0 build 2039.
port - [Optional] - Any valid port number (1..65535) that is recognized by the host server. Default value is 21.
No output parameters.
When this method is called synchronously, a return object containing the output parameters is returned to the caller immediately.
If you don't specify a port number, or an invalid nuber, the plugin will use the default FTP port (21).