How can I give retreival arguments in datawindow from Oracle stored procedure

Hi,
I’m trying to create a data window from oracle-stored procedure. Procedure contains one in parameter and 4 out parameters from three different tables of oracle database. Actually my main powerbuilder application is connected to mainframe db2 tables. In that one window contains one datawindow which is connected to db2 database. Now I need to create another datawindow in that same window thru Oracle stored procedure as a data source which takes one input and gives out set like emp_no as in variable and gives out as their details like name and address. How can I give retreival arguments in datawindow or any changes are in sp variables . Can some one help , if they know ?

Application open event:
// Connect to Oracle database.
gtr_customer = create transaction;
gtr_customer.DBMS = "ODBC"
gtr_customer.DBParm = "DisableBind=1,ConnectString='DSN=UrlOld;UID=DBA;PWD=SQL'"
connect using gtr_customer;
dw_customer.SetTransObject ( gtr_customer )

// Retrieve perticular row from the source tables.
dw_customer.retrieve(“gs_emp_id”)

stored procedure is as follows:

CREATE OR REPLACE PROCEDURE SP_DETAILS(
I_EMP_ID IN VARCHAR2, O_EMP_ID OUT VARCHAR2, O_NAME OUT VARCHAR2, O_ADDR OUT VARCHAR2,  O_CITY OUT VARCHAR2, O_STATE OUT VARCHAR2, O_COUNTRY OUT VARCHAR2, O_ZIP OUT VARCHAR2) is
BEGIN
  SELECT T1.EMP_ID, T2.NAME, T3.ADDR,T3.CITY, T3.STATE, T3.COUNTRY,T3.POSTAL
       INTO O_EMP_ID, O_NAME, O_ADDR, O_CITY,O_STATE, O_COUNTRY, O_ZIP
FROM TABLE1 T1, TABLE2 T2, TABLE 3 T3          
WHERE
-------------
AND T1.EMP_ID = I_EMP_ID;
END SP_DETAILS;