Is q-box host same as workspace IP?

I tried using host as 0.0.0.0 but the file transfer isn’t working and when I try host as workspace IP ,although it gets connected but when i try to run any command under ftp> I am getting this error:- 500 Illegal PORT command.
ftp: bind: Address already in use

There is an addition you’ve to make to vsftpd_v1.conf file. Search this issue on the net, you will find whats wrong and how to solve it.

I needed to add a parameter in conf file,that I did but its still not working
Edit:- Ok,I restarted the server and now its working