[rules-users] declaring attributes for an existing class

Hi,I've following class defined:public class User { private String id; //get,set, equals & hashCode method are defined } If I add more attributes using declare syntax as below:declare User    name : Stringend it gives error "Error creating field accessors for 'User' for type 'User'". Is there a way, more attributes can be added in existing class using declare syntax?  Alternatively, if a class is created by using only declare syntax, can we add equals/hasCode methods dynamically? Thanks & Regards,Neel