My installation node is not showing

What do I need for it to show on ur PolyScope. I followed the program node guide, and that node is working fine. I did the opposit of that one to the installation node. I even tryed to copy hellow word installation node and that one is not working eather on my urCap.

bundleContext.registerService(SwingInstallationNodeService.class, new myInstallationNodeService(), null);

Did you register it in the Activator class?