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The problem with using CHECK is that there are situations when you want to allow leading blanks to be valid. But you don't want to add a blank to the DIGITS constant, or else you'd be accepting imbedded blanks as well. Dan Bale IT - AS/400 Handleman Company 248-362-4400 Ext. 4952 -------------------------- Original Message -------------------------- How about the following: I '0123456789' C DIGITS C MOVEL'12G' SIN 3 C DIGITS CHECKSIN POS 30 C POS IFGT 0 C EXSR INVNBR C ENDIF C ... (Sorry about not being column-aligned.) +--- | This is the RPG/400 Mailing List! | To submit a new message, send your mail to RPG400-L@midrange.com. | To subscribe to this list send email to RPG400-L-SUB@midrange.com. | To unsubscribe from this list send email to RPG400-L-UNSUB@midrange.com. | Questions should be directed to the list owner/operator: david@midrange.com +---
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