Hi all, I'm trying to design a rule that checks if the inserted fact is a new one using the command "exists". Using the WorkingMemoryFileLogger I saw that each fact has his own Id so... how can I get this Id from the rule (drl, dsl)? Thanks, NEStor PD: I'm using drools 5 CR1 and guvnor for creating/editing the rules -- View this message in context: http://www.nabble.com/How-to-get-the-FactId-in-rule-design-tp23039786p230... Sent from the drools - user mailing list archive at Nabble.com.