variable length variable in a deferred DQ PROC

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Issue/Introduction

In CA Dataquery DQRY, I am trying to use the #DQOPERATORNAME variable in a Deferred query.

I need some way to uniquely identify each EXPORTed DSN to a user.

How do I pass a variable length variable via DQ PROC?

Refer to CA Datacom Core - 15.1 section on CA Dataquery "Batch Online Management: "Important Concepts"
https://docops.ca.com/ca-datacom/15-1/en/administrating/administrating-ca-dataquery/batch-management-overview/batch-online-management
"...
Commas in JCL

If a JCL variable ends with a comma, the variable must be on the end of the line because a blank is required to indicate the end of the variable.
..."

But, if I place a space at the end of the variable, it will add the blank to DSN node, causing JCL error IEFC605I.

This is the Dataquery PROC:
.. ================================ T O P =====================================
01 //TP1DQFBF JOB (999,APP4),'P1 NEW DQRY FB FILE ',
02 // CLASS=X,MSGCLASS=R,NOTIFY=&SYSUID
03 //STEP01 EXEC DQBATCH
04 //DQFIXD DD DSN=HLQ.A1?****** .DQRYFB.2?********,
05 // DISP=(NEW,CATLG,DELETE),
06 // SPACE=(CYL,(1,1)),UNIT=SYSDA
07 //SYSIN DD *
08 /* DQ INPUT
09 //
.. =========================== B O T T O M ==================================

After adding the blank, note the JCL errors from the execution:
XX*===================================================================
19 //DQFIXD DD DSN=HLQ.A041194 .DQRYFB.MYTEST02,
20 // DISP=(NEW,CATLG,DELETE),
21 // SPACE=(CYL,(1,1)),UNIT=SYSDA
22 //SYSIN DD *
23 //
O. MESSAGE
2 IEFC001I PROCEDURE DQBATCH WAS EXPANDED USING SYSTEM LIBRARY …
20 IEFC605I UNIDENTIFIED OPERATION FIELD
21 IEFC605I UNIDENTIFIED OPERATION FIELD

How to define a variable length variable in a deferred DQ PROC?

Environment

z/OS
CICS

Resolution

Since the blank will cause a JCL error in this case, use JCL SET statements to assign the values instead:

Modified DQ PROC using JCL SET statements:

//TP1DQFBF JOB (999,APP4),'P1 NEW DQRY FB FILE ',
// CLASS=X,MSGCLASS=R,NOTIFY=&SYSUID
// SET MYUID=A1?******
// SET MYFILE=2?********
//STEP01 EXEC DQBATCH
//DQFIXD DD DSN=HLQ.&MYUID..DQRYFB.&MYFILE.,
// DISP=(NEW,CATLG,DELETE),
// SPACE=(CYL,(1,1)),UNIT=SYSDA
//SYSIN DD *
/* DQ INPUT
//