I am running the following code for id's that arrive via text file in the format of: 1234567891011

m.DupNsn = TRANSFORM(ALLTRIM(THIS_REC.NSN), '@R AAAA-AA-AAA-AAAA')

The problem is that some of the id's arrive in the following format:
1234567

How can I add 0's to the tail end of these particular id's while it's pre-processing?