HI Chandan
Please check below did you regenerate screen ?
Also PLease note you may have to code in ONACTIONSEARCH method
Below is the code which may be useful
LOOP AT lt_soco_workarea ASSIGNING <lfs_soco_workarea>
WHERE werks IS INITIAL
OR price IS INITIAL.
LOOP AT llt_soco_workarea INTO ls_soco_wa
WHERE ext_demid = <lfs_soco_workarea>-ext_demid
AND object_id = <lfs_soco_workarea>-object_id
AND werks <> space.
** Move value of field Plant.
<lfs_soco_workarea>-werks = ls_soco_wa-werks.
Addition of columns in Sourcing Cockpit of SRM - Supplier Relationship Management - SCN Wiki
Regards
Vinita