Urbackup Server keeps writing temp files to / on server Ubuntu

I have changed the tmp file directory in /etc/default/urbackupsrv file. But when I run a backup it keeps filling up my / which has only 20GB for the OS. Did I miss a setting? I also changed temporary files as the backup buffer to on

Can you share the screen-shot of where you have made the changes and what is the urbackup version you are using.

it was my mount. I had it mounted in the wrong area