Hi Harold,
It would be helpful for us if you could provide us with more information about what you are trying to achieve. For example, what kind event you want to raise, where you want to raise it and what components you would like to subscribe to it. Like this we would have a better understanding of your scenario and we could help you further with this.
Thanks,
Damian Cherubini
http://blogs.southworks.net/dcherubini