Hi, Currently we have a rule defined like this When Currency value = 300 Currency type = USD Condition 3 = something Condition 4 = something Then do this If the input values are not of the same currency then we need to do a currency conversion and then evaluate the above rule. For example if the input value says Currency value = 250 and currency type = Euro. then we need to convert the currency value from Euro to USD and then execute the rule. Is this possible by using functions on the LHS. If possible is there a better way to do this as we are currently looking at 10,000 rules to go through this routine. Thanks. -- View this message in context: http://www.nabble.com/Modifying-fact-object-during-rules-execution-tp1665... Sent from the drools - user mailing list archive at Nabble.com. _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users