[xwiki-users] Writing the HelloWorld component - Failed to load component

Hello all! I've followed the step-by-step available on: http://platform.xwiki.org/xwiki/bin/view/DevGuide/WritingComponents <% def greeter = com.xpn.xwiki.web.Utils.getComponent(org.xwiki.component. HelloWorld.class); println greeter.sayHello(); %> And all I get when trying to use it with the Groovy code above is: Error: java.lang.RuntimeException: Failed to load component xwiki.component.Hello World?<http://10.11.1.221:9086/xwiki/bin/edit/org.xwiki.component/HelloWorld?parent=Main.teste9> for hint default<http://10.11.1.221:9086/xwiki/bin/edit/Main/default?parent=Main.teste9> ? <http://10.11.1.221:9086/xwiki/bin/edit/Main/default?parent=Main.teste9> Does anyone have any clue on what I'm doing wrong? Thank you! Wilson