OnError Event Handler not firing

Hi,

I have created an OnError Event Handler to catch an error in the Execute SQL Task in the Control Flow. On error I am simply inserting a few parameters in a DB table using Execute SQL Task. I followed the instructions in: http://www.sqlservercentral.com/articles/SQL+Server/66387/
Now when I run this error hanlder task manually it runs fine but when I purposely fail the SQL Task it never fires the error handler. I am not sure why. I checked the DisableEventHandler property and it is set to False.
Is there anything else that I am missing?

Thanks!