I want to build a component ,but I didn't get it .I just use the HelloWorld as a example interface like this: @ComponentRole public interface HelloWorld {    String sayHello(String name); } and script like this : @Component @Named("hello") @Singleton public class HelloWorldScriptService implements ScriptService {    @Inject    private HelloWorld helloWorld;    public String greet(String name)    {        return this.helloWorld.sayHello(name);    } }  aa I use it in xwiki like this :  {{velocity}} $services.hello.greet("aaa") {{/velocity}} but I didn't get the right result,I must make some mistakes at some steps I'm not clear,can you help me,please . _______________________________________________ devs mailing list devs(a)xwiki.org http://lists.xwiki.org/mailman/listinfo/devs