Re: [rules-users] Monitoring sensor parameter change

If I understand your question right, you could create a class called LastReading( SensorRead() ) and then your rules would look something like: rule 1 //check to see if the increase is > 2 when $last : LastReading( SensorRead($lastPower : power) ) SensorRead( $lastPower - power > 2) then System.out.println("Power increased more than 2") end rule2 //update which sensor read is the lastest reading salience 100 when $last : LastReading( ) $new : SensorRead() then retract($last) insert(new LastReading($new)) end -- View this message in context: http://drools.46999.n3.nabble.com/rules-users-Monitoring-sensor-parameter... Sent from the Drools: User forum mailing list archive at Nabble.com.