Service program procedure passing parameters to an external progr am

I have a service program module that has several procedures.  Some of these
procedures executes a procedure called "CreateMessage", which accepts a
message id and program name as parameters.  This procedure executes an
external CLLE program that accepts several parameters like message file,
action code, message id, etc.  All of the necessary variables, including
initial values for message file and action code are defined within the
CreateMessage procedure.  For some reason, the message id and program name
are blank when the external CLLE program is executed, but the message file
and action code have the initial values specified in the definition
specifications.

The CLLE program is compiled ACTGRP(*CALLER).  I have attempted to pass the
parameters into CreateMessage by value and reference to no avail.  I suppose
I could turn the CLLE program into a service program but it's used by a lot
of programs and I'd rather not have two copies of it.

Any thoughts will be most appreciated. 

Donald R. Fisher, III
Project Manager
Roomstore Furniture Company
(804) 784-7600 extension 2124
DFisher@xxxxxxxxxxxxx