values need to be reflected in screen exit fields in change/display trxns.

friends

i have added 3 input fields in the txn. QA01 (subscreen 100 of prog. SAPLXQPL...main prog. is SAPLQPL1)...i am able to enter values and is getting updated in the database...but the problem is, when i go into change insp. lot txn. qa02, the values entered in QA01 is not getting displayed...if those fields are left blank, the data base is updated with null values...i want the values which i entered in QA01 txn. to be reflected in QA02/03 txn, just like how other SAP transactions display the values..

when i attempt to fill my customized screen fields (qals-zztmcode, qals-zzproject) with the values from the parameter I_qals of EXIT_SAPLQPL1_004, it says QALS is unknown, but there is another fields with name i_qals...pl help me in this regard...thanks all

cheers,

Sathish. R