Trigger question

I'm using the program from Pete Hall's web site
(http://www.execpc.com/~pbhall/?trigger.html) as a basis for making a
trigger program over a test file. I'm copying the buffer from the physical
file, plus some job information, to a capture file. All the fields in the
capture file reference the original file. 

The problem is, both the original file and the capture file use packed
fields, and I am receiving a data decimal error when I try to write to the
capture file. Since this is a before insert trigger, the original record
buffer should be NULL fields. I have added AWLNULL to the packed fields in
the capture file, set ALWNULL(*USRCTL) in my program, and "eval
%nullind(o_co) = *on" (the first packed field in the input buffer).

I was expecting to output NULLs to the original record buffer in the capture
file. Is there something I'm missing in regard to NULLs and packed fields? 

The original file is a vendor supplied file, so it cannot be easily changed.
Thanks!

--
Loyd Goodbar
Programmer/Analyst
Borg-Warner Automotive, AFS, Water Valley

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