Unable to add item in Finder's contextual menu using services in Cocoa

Question

I would like to add an item in my Finder\'s contextual menu whenever I right-click on files or folders, and this menu being linked to a method of my Cocoa app.
I am fol

Answer 1

Found the issues:
1. I really had to store my application at least once into the Applications folder (which is not done by default when you compile with Xcode)
2. Should have added NSUpdateDynamicServices(); after the [NSApp setServicesProvider:self]; command.
3. Wait roughly 10 secs after having started the app to get Finder's Services menu populated.