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You could let the OS pass the parms correctly by creating a command which calls you CL program. Then in your RPG II string the command together then execute the command via QCMDEXC.
RPG II always defines numbers as zoned decimal, and QCMDEXC expects a 15,5 packed parameter. That makes it tricky to use from RPG II.
The other problem with using QCMDEXC is that you can't receive values back in the parameters. Frequently when people call native programs from RPG II, they do it so that they can write some code in a modern language, but return the results back to a legacy program. QCMDEXC makes this impossible, since it can't return anything (at least, not directly)
So, I don't understand why you'd recommend QCMDEXC in this situation. If you have to monkey around with converting the zoned decimal numbers to packed numbers, anyway, why not just call the CL program directly?
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