BackGround Task to execute report is 'IN PROCESS'

Hello Experts,
I have developd a workflow where i have added a task which will execute a report in background as code below -
SUBMIT rhakti00
     USING SELECTION-SCREEN 1000
    WITH SELECTION-TABLE rspar
      AND RETURN.
The output of the report is not relevant for my req so i dnt need to display the output of report after thts y i want to run this report in background.
Now,while executing the task ,the report has started executing in background perfectly but tht task remain in 'IN PROCESS' status. When i checked the tRFC for that task so its showing me mesaage that - "Screen output without connection to user."
Plz suggest how to complete my background task.
Regards
Nitin

thnks for the reply Kiran,
regarding ur point to send report output to many users....i want to make it clear tht i dont need to send or display the output of the report. I just need to execute the report in background and task shud get complete.
Also,Can u plz explain it further abt writing code in FM and thn get the output in export or table parameter.......i mean which field or which table of which type shud i use in export or table paramenters of FM. if u can tell me somethg in coding also..tht will ne helpful...
Regards
Nitin

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EXPORTING
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EXCEPTIONS
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Y0 Team ABAP,
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Unfortunateley those subtotals cant be handeled by the layout, thats why i manually add them.
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BackGround Task to execute report is 'IN PROCESS'

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