Hi Francesco, I was able to build the source (master branch) and run the standalone Syncope. It works fine. But when I try to use eclipse plug-in(2.1.0) there is a Loading Template error. I tried out eclipse plug-in version 2.0.8 and it works fine and also both netbeans plug-in versions(2.0.8 & 2.1.0) work fine.
Apart from that I was able to go through the plug-in source code and if I'm not mistaken I have to use implementations endpoints to make $subject work. It will be really helpful if you can provide a brief description of SYNCOPE-956 <https://issues.apache.org/jira/browse/SYNCOPE-956> (feature you added through the task). Appreciate any help. Best Regards Isuranga Perera