Selection of Null Value in Transformation file

Hi Guru's,
I've been trying to select NULL values of a field in transformation file but unfortunately system always gets both null and filled values of the field ALTHOUGH i had maintained the Selection Option.
Data management package is: Load Transaction Data from BW InfoProvider UI
The technical name of field: 0FLAG
I've tried each possibilities as in below
SELECTION: 0FLAG, *STR()
SELECTION: 0FLAG, *STR();
SELECTION: 0FLAG, ""
SELECTION: 0FLAG, " "
SELECTION: 0FLAG, NULL
SELECTION: 0FLAG, *STR(#)
SELECTION: 0FLAG, #
SELECTION: 0FLAG, "#"
Doesn't work.
thanks in adv. for your precious supports

Hi Sadi,
I understand your question that, you want to load tr. data from infocube and you have a trouble with one field which name is "0flag" in this cube, right? If your case is above, you need conversion file for flag, and convert like that # = "DUMMY" or sth.
Or, you can solve in BW with transformation file routine.
I hope, it will help you.
Thanks.

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drop table t1;
create table t1 ( c1 number,c2 varchar2(2) );
insert into t1 values(1,'A');
insert into t1 values(2,'B');
insert into t1 values(3,'');
insert into t1 values(4,'D');
drop table t2;
create table t2 ( c1 number,c2 varchar2(2) );
insert into t2 values(1,'A');
insert into t2 values(2,'B');
insert into t2 values(3,'');
insert into t2 values(4,'C');
select a.c1 from t1 a ,t2 b
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1
2
3

does not make any difference
drop table t1;
create table t1 ( c1 number,c2 varchar2(2) );
insert into t1 values(1,'A');
insert into t1 values(2,'B');
insert into t1 values(3,null);
insert into t1 values(4,'D');
drop table t2;
create table t2 ( c1 number,c2 varchar2(2) );
insert into t2 values(1,'A');
insert into t2 values(2,'B');
insert into t2 values(3,null);
insert into t2 values(4,'C');
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6
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EMPLOYEE_NAME varchar2(30))
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values(1,'A')
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values(3,'C')
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OF NUMBER;
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2 FROM TABLE(CAST(emp_fun(arg_list_typ(1,3,4)) AS emp_tab_typ))
3 /
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