[rules-users] Custom operator

Hello, I'd like to implement a custom "lucenematches" operator that would enable writing conditions like: $d : Doc(text lucenematches "(foo AND bar) OR roam~0.8") As I've taken a look at the following post on athico (http://blog.athico.com/2009/05/imperfect-evaluations.html), and seen that the appendix B of the "Drools JBoss Rules 5.0 Developer's Guide" book that deals with custom operators, I am rather confident that I will find my way in implementing my operator (if not, I'll post here again :-)). However, I wonder if it will be possible to add my "lucenematches" operator to the "operator" drop-down list of the Eclipse's Business Rule Editor. Does anyone have an idea? Best regards, Bruno.