"preview" dont'work on appl 10g

Question

in the follow procedure, if i canche the value of DESTYPE parameter from "CACHE" ---->>> to "PREVIEW" the report don't work.
if it is set to cache it generate e report file in the application server local directory, bur the user that lunch the report dont'see it !!!!
DESTYPE = 'PREVIEW' DON'T WORK ??????
WHICH IS THE MEANING OF "DESTYPE"
the have a button on a form that run on application 10g
DECLARE
report_id Report_Object;
BEGIN
HOUSE_ORD (:B0.LIST_ORDER);
COMMIT;
report_id:= find_report_object('rep01');
RUN_REPORT_OBJECT_LIST(report_id , 'rep_app00' , 'pdf');
END;
the procedure that i call is
PROCEDURE RUN_REPORT_OBJECT_LIST(report_id REPORT_OBJECT, reportserver varchar2, runformat varchar2) IS
report_job_id VARCHAR2(100);
vc_rep_status VARCHAR2(20);
paramlist_id ParamList;
paramlist_name VARCHAR2(10):='tmplist';
BEGIN
SET_REPORT_OBJECT_PROPERTY(report_id,REPORT_COMM_MODE,SYNCHRONOUS);
SET_REPORT_OBJECT_PROPERTY(report_id,REPORT_SERVER,reportserver);
paramlist_id:= get_parameter_list(paramlist_name);
IF NOT id_null(paramlist_id) THEN
destroy_parameter_list(paramlist_id);
END IF;
paramlist_id:=create_parameter_list(paramlist_name);
add_parameter(paramlist_id,'DESTYPE',TEXT_PARAMETER,'CACHE');
add_parameter(paramlist_id,'PARAMFORM',TEXT_PARAMETER,'NO');
add_parameter(paramlist_id,'desformat',TEXT_PARAMETER,runformat );
report_job_id:=RUN_REPORT_OBJECT(report_id,paramlist_id);
END;

Answer 1

Hi Mike,
Pl follow Note 207396.1 on Metalink: "How to Run Reports From Forms 9i / 10g Using RUN_REPORT_OBJECT"
http://metalink.oracle.com
You can also follow the sample code given in this document "Integrating OracleAS Reports Services in OracleAS Forms Services":
http://otn.oracle.com/products/forms/pdf/frm9isrw9i.pdf
Navneet.