Submit program returns less number of records

Hi,

I'm using submit program to get ouput and process in my zprogram.

but the submit program returns less records, when compared to running directly the std report. and i'm using same variant and data on the selection screen.

submit program gets 48 record, where as the direct running std programs gets 1000+ records. does anybody know how this is set to return?

here is my code

SET PARAMETER ID 'KOK' FIELD 'WEC0'.
SUBMIT RPSISVG000
USING SELECTION-SET 'QUALITECH'
with  CN_PSPNR IN SO_POSID
      AND RETURN.
COMMIT WORK AND WAIT.

IMPORT I_ACT
  FROM MEMORY ID 'ZCN47N_ACTI'.