Surya,
Your statements about the alerts you have created are pretty vague. I suggest you first review the examples provided by SAP in /SAPAPO/ADVM. You need to ensure that your Macro Alert works before you even think about trying to use the Alert Monitor.
You should review SAP's Macro examples, and reverse-engineer them: //ADVM > do not select any macro book > select Ctrl F9 (where-used list) > Select Macro Elements > select Alert/Status. You will get a list of every Macro that includes an alert. Ignore your own Macros (they don't work, right?) and instead select the 'Example' macros. Open these books one by one, and all the macros that contain Alerts will be displayed in the work area. Open each macro and analyze them. You will see how a successful alert is created.
Best Regards,
DB49