Error in Encrypting a text file remotely using GPG Commands

Hi Experts,

I have installed gpg4win-2.2.1 in my application server.and tested the gpg encryption commands  in command prompt and it works ok.

I could be able to  encrypt and decrypt ok using the pair keys(public&private+ passphrase) My text file located in the server's c drive. 

Now I would like to execute this command via ABAP program to a file server location \\172.16.1.12\sapmnt\dataset\gpg\.

This were my steps:

First I created a ZENCRYPT command in tcode SM69.  with the following settings :

• operating system windows NT
• Operating system command  gpg
• Parameters for operating system command <blank>
• Additional Parameters allowed checkbox <selected>

Secondly,I created a z program  with source code

REPORT zsxpg_command_encrypt.

   DATA: l_exitcode TYPE btcxpgexit,

              l_parms    TYPE btcxpgpar,

              l_status    TYPE btcxpgstat,

              pass1        TYPE string VALUE ' -r Administrator ',

              pass2             TYPE string VALUE '-o "\\172.16.1.12\sapmnt\dataset\gpg\diary 2003-02.txt.gpg" ',

              px_target2 TYPE string VALUE '-e "\\172.16.1.12\sapmnt\dataset\gpg\diary 2003-02.txt" ',

              lt_protocol TYPE STANDARD TABLE OF btcxpm,

              l_protocol TYPE btcxpm.

   CONCATENATE  pass1 pass2 px_target2  INTO l_parms  SEPARATED BY space.

   CALL FUNCTION 'SXPG_COMMAND_EXECUTE'

   EXPORTING

     commandname                  = 'ZPGP_ENCRYPT'

     additional_parameters         = l_parms

   IMPORTING

     status                                = l_status

     exitcode                             = l_exitcode

   TABLES

     exec_protocol                     = lt_protocol

   EXCEPTIONS

     no_permission                 = 1

     command_not_found             = 2

     parameters_too_long           = 3

     security_risk                 = 4

     wrong_check_call_interface    = 5

     program_start_error           = 6

     program_termination_error     = 7

     x_error                       = 8

     parameter_expected            = 9

     too_many_parameters           = 10

     illegal_command               = 11

     wrong_asynchronous_parameters = 12

     cant_enq_tbtco_entry          = 13

     jobcount_generation_error     = 14

     OTHERS                        = 15.

IF sy-subrc NE 0OR l_status NE 'O' OR l_exitcode NE '0'.

* Failure

   FORMAT COLOR COL_NEGATIVE.

   WRITE: / 'Failed to Encrypt'.

   FORMAT COLOR COL_NORMAL.

   LOOP AT lt_protocol INTO l_protocol.

     WRITE: / l_protocol-message+0(l_protocol-length).

   ENDLOOP.

ELSE.

* Success

   FORMAT COLOR COL_POSITIVE.

   WRITE: / 'Successfully encrypt' .

ENDIF.

I Tried to check all forums if any one had succeeded in this but in vain.Can someone help me understand where am going wrong.

Thanks

Regds

Studentof Abap