Re: [rules-users] Drools parser error accessing ArrayList.

laune, Unfortunately, the earlier test worked when I set the dialect to "java". It does not work when it's set to "mvel". When the rule is written as follows : rule "Hello World" dialect "mvel" when $cur : Message() $others : ArrayList ( size > 0 ) from collect(Message( status == Message.HELLO )) then for ( int ctr = 0; ctr < $others.size(); ctr++ ) { System.out.println("Got message : " + (Message) others.get(i)); } end I am now getting the following error : Unable to Analyse Expression for ( int ctr = 0; ctr < $others.size(); ctr++ ) { System.out.println("Got message : " + (Message) others.get(i)); } ;: [Error: unable to resolve method using strict-mode: org.drools.spi.KnowledgeHelper.$others()] [Near : {... int ctr = 0; ctr < $others.size(); ctr++ ) { ....}] ^ [Line: 7, Column: 0] : [Rule name='Hello World'] java.lang.IllegalArgumentException: Could not parse knowledge. at com.sample.DroolsTest.readKnowledgeBase(DroolsTest.java:50) at com.sample.DroolsTest.main(DroolsTest.java:23) It looks like for some reason, the parser is unable to decipher the $other. Any insight into what could cause this ? Thanks in advance, Gurvinder -- View this message in context: http://drools.46999.n3.nabble.com/Drools-parser-error-accessing-ArrayList... Sent from the Drools: User forum mailing list archive at Nabble.com.