using null parameters in cl program

Hi, I want to ask if and how can I use a parameters in a CL program which might not to be passed ?

I mean that I might call this CL program without using these last parameters,
and if I do so, if and how can I use these parameters in the CL program ?

until now I allways received the message "Pointer not set for location referenced." when I tryed using these parms.

Thank.
ams6Asked:
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dedy_djajapermanaConnect With a Mentor Commented:
hi,

you can create a command to call the program. with command, you can give a default value when the parameters are not provided.

cheers,
dd
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ams6Author Commented:
Thanks,
and my contiuation problem is that i want to add parameters to an existing cl program without changing the programs which called to that cl prog.
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daveslaterCommented:
Hi
a work around that I have used in the past is to:
Rename the old cl to say PGM CLA.
Create the new CL say PGMCLB the same as the iold CL but with then new parms
then create an RPG (or RPGLE) program under the original CL name.
With the RPG you can then test for the number of parms passed and call the relevent CL.

Dave
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tliottaCommented:
ams6:

First question -- Is it a CL program or ILE CL program? If it's CL, then a command is your only option, AFAIK.

But by compiling it as ILE CL, you don't need a command. The program can be called directly and handle optional parms fine.

Tom
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