Mysql has the ability to create events and has its own built in event scheduler. http://dev.mysql.com/doc/refman/5.1/en/events.html
When trying to create these via dbmaintain the parser fails since it does not correctly determine that this is a PLSql supporting block of sql.
The issue has been brought up in the past via Discussion (https://sourceforge.net/p/dbmaintain/discussion/917034/thread/b997ff06/) but no solution was ever made or even ticket that I could find.
Attached is a patch file that contains a test case and the supporting change for the PLSql parser to support Mysql events.