How do I find the value of an entry in .xsystem.retention.duration.policy.list   Those fields are string values. I need the corresponding xam_int.

Any code samples on how to apply one of these policies to an XSet?

1. Must I set ".xset.retention.base.duration.policy"   ?
   
2. Or can I simply set ".xset.retention. .enabled" where is one from the list on US. For example, set ".xset.retention.30days.enabled" to TRUE.