User Popup Message - CALL 'ThUsrInfo' ID 'OPCODE'

Hi experts,

I'm playing around with popup messages.

I know function TH_POPUP - everyting's working and fine.

Now I want to do this "part of coding" in my own program - then I can change the text of the popup a little bit.

What I am doing:

REPORT  ztest_user_popup.

INCLUDE tskhincl.

DATA: client LIKE sy-mandt,

          user LIKE sy-uname,

          new_message(512),

          message_len LIKE sy-index,

          loc_cut_blanks  TYPE x VALUE 0.

 

 

new_message = 'TEST'.

client = sy-mandt.

user = sy-uname

message_len = STRLEN( new_message ).

loc_cut_blanks = 0.

 

CALL 'ThUsrInfo' ID 'OPCODE' FIELD opcode_send_pop_up     "#EC CI_CCALL

       ID 'CLIENT' FIELD client

       ID 'USR' FIELD user

       ID 'MSG' FIELD new_message

       ID 'MSG_LEN' FIELD message_len

       ID 'CUT_BLANKS' FIELD loc_cut_blanks.

 

BREAK-POINT.

Problem is - nothing is happening! At the break-point at the end, sy-subrc = 1.

What am I doing wrong? Any ideas?

Thanks

Michael