RPG/400 pgm strange behaviour

I have a program (RPG/400) that checks if some record exists and return.

These two filds are *ENTRY parms of the PGM:
MSDT$E - length 256
$RTC$E (*FOUND or *ERROR) - length 8A


The condition used is like this:

*IN,96    IFEQ '0'
          MOVEL'*FOUND'  $RTC$E
          MOVELMSDTOH  MSDT$E
          ELSE
          MOVEL'*ERROR'  $RTC$E
          ENDIF

It works fine, excepts for one thing: if the condition is true, when it moves
the MSDTOH content to MSDT$E, it erases the $RTC$E field. For the other hand,
when the first move is done, the '*Found' is placed in the 34th position of the
field MSDT$E.

Is there any restriction about entry parms lenght ?
How can I resolve this?

Thanks
                     ,,,,,,
                   (o o)
-----------------------oOO--(_)--OOo------------------------
Silvio Santos                                BRAIN Portugal
Tel:    +351 252 248-120             Av. Joao Canavarro, 305
Fax:    +351 252 248-111            4480-668 Vila do Conde
                                                          Portugal
Email: silvio.santos@brainag.com
Web-Page: www.brainag.com
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