[rules-users] calling a function from the facts model

Hi. After importing the fact model to guvnor i open try to create a new rule. in the left side i see the fact model, i click the "+" and get all the members of the fact class (all my members are public). my question is, why cant i see the methods of the facts class? i want to use a method that receives a parameter and returns an answer, then check that answer in the rule and do something accordingly. example: currently my rule look like rule "Rule-04" salience 100 activation-group "mygrp" no-loop true when d : myFacts( isOne == "false", isTwo == "true", hasThree == "true") then System.out.println("Rule 04 activated"); d.someMethodDone(); i want it to be something like: when d : myFacts( isOne == "false", isTwo == "true", hasNumber("three") == "true") then System.out.println("Rule 04 activated"); d.someMethodDone(); i want hasNumber to be a function i give a parameter too and check it return how can this be done? Thanks. Nadav.