How to set up mybooklive as an sftp server

So I’m having issues.  I think I did got most everything working following the instructions from here .

I think my problem is that I can’t seem to change the /etc/vdftpd.conf file to set a higher number of connections as instructed in the below sentence from the above linked thread.

"Finally, the FTP daemon that runs inside MLB limit the number of connection from one IP address to one.  Filezilla does not work with this set up so you need to change it to higher number ( I used 6)   you can change it in /etc/vdftpd.conf inside the MLB "

I had no problems SSHing into the mybooklive with putty.  I then typed pico /etc/vdftpd.conf and that only brought up a new blank file.  What am I doing wrong?

Thanks.