Submit Oracle Alert through plsql code

Hi,

i am trying to submit oracle alert through plsql code and block completed successfully. But i am not getting the results and output showing as '0'.

i am using below code. Please help me on this.

declare

v_req number(5);

Begin

v_req :=fnd_request.submit_request('ALR', -- Application Short name of the Concurrent Program/or for Alerts it is ALR

'ALECDC', -- hard coded Program Short Name for Alerts

'XXSD_NEW_USER_ALERT', -- Description of the Program.--- alert_name col from table alr_alerts  for your alert name'

SYSDATE, -- Submitted date. Always give the SYSDATE.