how to get 2 fields from LookUp form

Hi  all,

i'm poor at English,But would you help me??

When one of the records in LookUp form
(made from "employee" table which consists of the three fields:
 store_id(primary key1), employee_id(primary key2) , menber_name) is clicked,
I want to acquire 2 kinds of ID: its store_id and its employee_id. (these are set of primary key)

finally, i want to display its store_id on a intEdit, and its employee_id on another intEdit.

But in the code which i made, i can only get 1 kind of ID: its store_id or its employee_id.

my code------

public void lookUp()
{
SysTableLookUp stLookUp;
QueryBuildRange qbRange;
QueryBuildDataSource qbDS;
Query q;
;

//super();

stLookUp = SysTableLookup::newParameters(tableNum(employee), this);

qbDS = q.addDataSource(tableNum(employee));

stLookUp.addLookUpField(fieldNum(employee, store_id) /* , true */ );
stLookUp.addLookUpField(fieldNum(employee, (employee_id), true);
stLookUp.addLookUpField(fieldNum(employee, (menber_name));

stLookUp.parmQuery(q);

stLookUp.performFormLookUp();

}

----------

The method(addLookUpField)'s second item is boolean type,

but I want to 2 returnItems.

so I can only choose a kind of Field.

Is there any good way?