[rules-users] nested condition in from collect

I'm trying to determine if a user has a certain immunization on record or a group of immunizations but when I attempt to put additional the rule will not compile. rule "Immunizations_Determine if a user has a valid tetanus immunization" dialect 'mvel' no-loop true salience 100 when $user : User($profile : profile) $got : List() from collect ( UserImmunization( immunization != null, eval( immunization.immunizationName == "Td or Tet/Dip (Tetanus/Diphtheria)" || immunization.immunizationName == "Tdap (Tetanus/Diphtheria & Pertussis)" || immunization.immunizationName == "DT (Diphtheria/Tetanus)" || immunization.immunizationName == "TT or Tet Tox (Tetanus Toxoid)" || immunization.immunizationName == "Tetanus")) from $profile.userImmunizations ) then System.out.println("The user has has a valid tetanus immunization "); end The profile contains a list of UserImmunizations. UserImmunizations: private Long id; private Immunization immunization; private Date dateReceived; Immunizations: private Long id; private String immunizationName; I'm not sure if this is a good place to use 'from accumulate'. Is it possible to do the condition for the Immunization object within the 'from collect' or should it be evaluated separately? -- View this message in context: http://drools-java-rules-engine.46999.n3.nabble.com/nested-condition-in-f... Sent from the Drools - User mailing list archive at Nabble.com.