You need to change your rule:-

rule "userrole"
when
    user1: BnUserValue(name : name, creationDate : creationDate)
    and
    ActiviteOut : BnNodeValue( BnRole: bnRole )
    and
    lien: BnEdgeValue(id : id)
then
    System.out.println("oui ça marche");
end

Hello,
First sorry for my bad english
I have a problem when I execute this code

rule "userrole"
when
user1: BnUserValue(name : name, creationDate : creationDate)
and
ActiviteOut : BnNodeValue( BnRole: BnRole )
and
lien: BnEdgeValue(id : id)
then
System.out.println("oui ça marche");
end

BnRole is attribut type ; BnRoleValue (class declared)
when I remote this attribue(BnRole) this code work
all the attribut which I set with type different to classique type (String, Integer, Date, List,... ) implique an error execution I don't know why I import all my class and I'm sure that class haven't error

org.drools.rule.InvalidRulePackage: Unable to create Field Extractor for 'BnRole'

class BnRolevalue et Bn Value is in the joint piece

please help me it's very urgent

thank you for your help
Best regards
Ismail