Passing parameters to a procedure executed by DBMS_SCHEDULER

I have a scheduler program that runs a stored procedure that requires input parameters.

BEGIN
  DBMS_SCHEDULER.DROP_PROGRAM
    (program_name          => 'MYSCHEMA.EXPORT_SCHEMA_STARTING');
END;
/
BEGIN
  SYS.DBMS_SCHEDULER.CREATE_PROGRAM
    (
      program_name         => 'MYSCHEMA.EXPORT_SCHEMA_STARTING'
     ,program_type         => 'STORED_PROCEDURE'
     ,program_action       => 'MYSCHEMA.EXPORT_STATUS'
     ,number_of_arguments  => 0
     ,enabled              => FALSE
     ,comments             => NULL
    );

  SYS.DBMS_SCHEDULER.ENABLE
    (name                  => 'MYSCHEMA.EXPORT_SCHEMA_STARTING');
END;
/

How can I pass parameters to the EXPORT_STATUS procedure?

I changed it into program that runs a PL/SQL BLOCK so far:

BEGIN
  SYS.DBMS_SCHEDULER.CREATE_PROGRAM
    (
      program_name         => 'MYSCHEMA.EXPORT_SCHEMA_STARTING'
     ,program_type         => 'PLSQL_BLOCK'
     ,program_action       => 'MYSCHEMA.EXPORT_STATUS(''STARTING''); END;'
     ,number_of_arguments  => 0
     ,enabled              => FALSE
     ,comments             => NULL
    );

  SYS.DBMS_SCHEDULER.ENABLE
    (name                  => 'MYSCHEMA.EXPORT_SCHEMA_STARTING');
END;
/

It works as I expected. But if anyone knows how to keep it in the previous format, will be appreciated.