Hi! I'm using pattern matching on Java objects in the when part of my rules. One example might be: CommonDataObject($name : name matches ".*STATUS_D.._B..\.fsm.*", type == Type.STRING, $stringValue : stringValue != "OK" && stringValue != "UNKNOWN") So you can see, that my Java object "CommonDataObject" has at least 3 members: name, type and stringValue. This works all fine. Unfortunately my object could also hold a Float or an Integer value. The current implementation uses additional "floatValue" and "integerValue" members in order to access them from the rules. I would prefer very much to remove my "stringValue", "floatValue" and "integerValue" members at all. As I already have a "type" member (which can be Type.STRING, Type.FLOAT or Type.INTEGER), I would like to just store one member called "value" which would then just be an Object. As the rules have access to the type-member, they should then be able to cast the value-member to the correct type: CommonDataObject($name : name matches ".*STATUS_D.._B..\.fsm.*", type == Type.STRING, $value : (String)value != "OK" && (String)value != "UNKNOWN") Unfortunately it seems, that a direct type-cast is not possible in the when part of a rule. Maybe someone knows a way to realize this functionality... Thanks in advance! -- View this message in context: http://www.nabble.com/Type-Casting-in-when-part-of-rule-tp16628142p166281... Sent from the drools - user mailing list archive at Nabble.com.