Use the SQL Anywhere 12 plug-in to connect to the database as a user with DBA authority.

Connect to the database as a user with DBA authority.

Click Mode » Debug.

In the left pane, double-click Events.

Double-click the event you want to debug.

On the SQL tab in the right pane, press F9 to set a breakpoint.

From Interactive SQL or another application, trigger the event handler using the TRIGGER EVENT statement.

The execution stops at the breakpoint you set.