Hi maryam,
Remove value 'D'. and try
try like this
DATA : answer1(1) TYPEc.
DATA : ZANSWER(1) TYPECVALUE'D' .
answer1 = 'J' .
EXPORT answer1 TOMEMORYID'ABC'.
IMPORT ANSWER1 TO ZANSWER FROMmemoryid'ABC'.
WRITE : / zanswer.
are you trying to get default value 'D' in case of not value in answer1?