Selective Replication Formula to pull Documents

I’m trying to make a new replica copy of database. New Replica copy will just pull documents, which starts with id’s as “corp-08” and “corp-09”

It should not pull other documents having id’s as CORP-07-20-07-00 or CORP-06-20-07-00 …

What is the selective replication formula should i be using…

Can u pls help on this…

Subject: Selective Replication Formula to pull Documents

Have you tried @begins i.e. @begins(FIELDNAME;“CORP-08”)