FRM-41213-Unable to connect to the Report server <reportservername>

I'm using below code to call a report (RDF) from form 10g. While calling report I'm getting an error as

Could you please let me know from where I can get the correct REPORT SERVER NAME?

--> Code:

PROCEDURE RUN_FFPC_001_01_REPORT IS

  repid      REPORT_OBJECT;

  v_rep      VARCHAR2(100);

  rep_status VARCHAR2(50);

  v_rep_server VARCHAR2(100);

BEGIN

    repid := find_report_object('REPORT587');

      

    --    v_rep_server:=    Get_Application_Property('REPORT_SERVER');

        insert into TESTING(seq_num,text) values(001, v_rep_server);

        commit;

      

  SET_REPORT_OBJECT_PROPERTY(repid,REPORT_EXECUTION_MODE,BATCH);

  SET_REPORT_OBJECT_PROPERTY(repid,REPORT_COMM_MODE,SYNCHRONOUS);