creating alert policies in oracle audit vault and database firewall - Stack Overflow

I created alert policy as shown in below screenshot. When I do create or drop statement it is not showing alerts of the condition. I don't know where the problem is

Steps:

1. Created custom audit policy in db:

    CREATE AUDIT POLICY TABLE_MANAGEMENT_POLICY 
   ACTIONS CREATE TABLE, DROP TABLE;
   

2. Enabled it:

   AUDIT POLICY TABLE_MANAGEMENT_POLICY;
   

3. In the avdf create audit policy and alert condition:

   :EVENT_NAME IN ('CREATE', 'ALTER', 'DROP')
   AND :TARGET_TYPE IN ('TABLE', 'INDEX', 'VIEW', 'SEQUENCE', 
   'PROCEDURE')
   

But when do create statement in db, it is not showing alert in avdf console. Screenshot:

Unable to get the alert. Trying to fix it, can any one help with it?