Backup script for F5 LTM and FTP the UCS off to another server

I think the problem that I am having might have to do with the fact I am possibly not running the script as the root account. The tmsh save /sys ucs /var/tmp/BIG-IP_backup command won't run from the command line unless I give the tmsh command first. I copied the script into the etc/cron.daily and have been running it manually to see if it works.