Weekly Schedule configuration backup(auto)

Hi,

We have SRX240H2  with Junos 12.1 version in packet mode.

We need to schedule auto weekly configuration backup of SRX. Backup will be store on FTP/TFTP.

I gone through below procedure but could not finalize script.

https://forums.juniper.net/t5/SRX-Services-Gateway/Scheduled-configuration-backups-from-SRX-with-hostname-and-Date/td-p/43512

Thank you...