where did those zeros come from?

Hello all.

I am submitting a job from a CL program passing some parameters. When the
RPG program receives the parameters they contain some zeros that weren't
there before I submitted the job. I thought this list might be able to help
me out, as it has done in the past. Here come the details.

The following is my CL program. The parameters are filled from an input
screen.

              DCL        VAR(&P01) TYPE(*CHAR) LEN(30)                  
              DCL        VAR(&P02) TYPE(*CHAR) LEN(90)                  
              DCL        VAR(&P03) TYPE(*CHAR) LEN(9)                   
              DCL        VAR(&P04) TYPE(*CHAR) LEN(8)                   
              DCL        VAR(&P05) TYPE(*CHAR) LEN(8)
...
              DMPCLPGM                                                   
              SBMJOB     CMD(CALL PGM(*LIBL/PRR50130) PARM(&P01 &P02 +   
                           &P03 &P04 &P05)) JOB(PRR50130XX) JOBQ(QPGMR2)

As you can see, I do a dump CL program right before the submit job. Here are
the values of the parameters in the dump.

&P01               *CHAR                30        '020090
'    F0F2F0F0F9F040404040404040404040404040404040404040
                              +26                '     '
4040404040                                        
&P02               *CHAR                90        '
'    40404040404040404040404040404040404040404040404040
                              +26                '                         '
40404040404040404040404040404040404040404040404040
                              +51                '                         '
40404040404040404040404040404040404040404040404040
                              +76                '               '
404040404040404040404040404040                    
&P03               *CHAR                 9        '         '
404040404040404040                                
&P04               *CHAR                 8        '00000000'
F0F0F0F0F0F0F0F0                                  
&P05               *CHAR                 8        '00000000'
F0F0F0F0F0F0F0F0

Here is the entry parameter list in the RPG program.

C     *ENTRY        PLIST                                               
C                   PARM                    p01              30         
C                   PARM                    p02              90         
C                   PARM                    p03               9         
C                   PARM                    p04               8         
C                   PARM                    p05               8

The very first thing I do in the RPG program (*INZSR) is a dump. The dump
shows the following in the above parameters.

P01                   CHAR(30)             '020090                        '

                      VALUE IN HEX
'F0F2F0F0F9F0404040404040404040404040404040404040404040404040'X

P02                   CHAR(90)             '
00000000      '    
                        81                 '          '

                      VALUE IN HEX
'404040404040404040404040404040404040404040404040404040404040404040404040404
04040'X   
                        41
'4040404040404040404040404040404040404040404040404040F0F0F0F0F0F0F0F04040404
04040'X   
                        81                 '40404040404040404040'X

P03                   CHAR(9)              '         '
'404040404040404040'X                                                
P04                   CHAR(8)              '00000000'
'F0F0F0F0F0F0F0F0'X                                                  
P05                   CHAR(8)              '00000000'
'F0F0F0F0F0F0F0F0'X

My question is where did those 8 zeros come from in variable P02? They
aren't there immediately before the submit, but they are there immediately
after the submit. Why? I am testing the variable for *BLANKS within the RPG
program and it isn't doing what it's supposed to because those zeros are
there.

Thanks in advance.
- Adam

application/ms-tnef