Creating content filtering or DLP rule to block emails contain DEA

I tried to use DLP profile for alerting and blocking outbound emails which contains DEA numbers without success, it works great in office365 but after moving to on premise with fortimail it doesn't detect those emails, even my testing emails which detect with office365.

I wonder if I can create custom dictionary for DEA. the pattern is clear but there is no instruction how to config it in fortimail.

does any one use it?

eventually I need to detect HIPAA and DEA for outbound emails.

thank you