source data type was unicode[DT_WSTR ] length was 255.
so this query worked...
[M/F] == (DT_STR,50,1252)"M" ? "MALE" : [M/F] == (DT_STR,50,1252)"F" ? "FEMALE" : "NA"
but for
source data type is unicode[DT_WSTR ] length is 1.what should be the querry???how to solve length issue???