ABAPFunction get Table

i have function with Import & Export & Table

IMPORT (MATNR , P_STOC,P_WERKS)

EXPORT (ZQTY)

TABLE(ITAB)

how i can get ITAB table

SELECT Table__3."ZQTY" FROM "ABAPFunction"."ZFGROUP"."Z_ATP" Table__3 WHERE ( Table__3."-IMPORT_P_MATNR" = 'xxx' AND Table__3."-IMPORT_P_STOC" = 'xxx' AND Table__3."-IMPORT_P_WERKS" = 'xxx' )