[rules-users] Weighted rules / scoring

Hi, I want to be able to use drools / guvnor brms to store weighted rules (scoring), however I can't seem to find a way to do this. I attempted the following, rule "Myscoreincreaserule" dialect "mvel" when Applicant( name == "chris" ) then Applicant fact0 = new Applicant(); fact0.setScore( score + 2 ); insert(fact0 ); end drools didn't seem to like the way I did this. Perhaps this isn't permitted, in effect I am trying to do - score = score + 2. Upon validation I get the following error. [Myscoreincreaserule] Unable to build expression for 'consequence': Failed to compile: 1 compilation error(s): - (1,3) unqualified type in strict mode for: age ' Applicant fact0 = new Applicant(); fact0.setScore( score + 2 ); insert(fact0 ); ' Any ideas on how I should be approaching this? Thanks,