db2 backup retention

Hello, 

I'm facing the same issue as Don_w on this topic : http://www.symantec.com/connect/forums/db2-backup-difference-retention

Our client need to backup one db2 instance every day with a retention of 3 days, and every week with 3 weeks retention.
I created 2 differents policies, but when the daily policy starts, it calls the schedule of the other policy, so the retention is 3 week!

I would like to know how can I configure my script runs by netbackup (version 6.5.6), to use the correct policy and the correct schedule to have my daily backup with 3 days retention.

Schedules contain a Default-Application-Backup and my schedule in Automatic Full Backup.

My script in attachment.

Thanks for your help.