Hi again! sorry for the delay, I have been out of the office. Thanks all for the answers. The function I tried to use on my spreadsheet was:
function boolean isInRange(Date date, int months){ Date minDate = new Date(); Date maxDate = Utils.addMonthsToDate(minDate, months); if((Utils.compareTo(minDate, date) == Utils.EQUAL || Utils.compareTo(minDate, date) == Utils.LOWER) && (Utils.compareTo(maxDate, date) == Utils.EQUAL || Utils.compareTo(maxDate, date) == Utils.GREATER)) return true; else return false; } Utils is a static class I imported from my java classes. From the table rules: CONDITION customer:Customer() eval(isInRange(customer.setContractEndDate(),$param)) And the trace: org.drools.RuntimeDroolsException: Exception executing predicate es.tid.tesco.ur.dataprocessing.ruleengine.rules.Rule_ContractDate_12_0Predicate0Invoker@53028588 at org.drools.rule.PredicateConstraint.isAllowed(PredicateConstraint.java:279) at org.drools.reteoo.AlphaNode.assertObject(AlphaNode.java:141) at org.drools.reteoo.CompositeObjectSinkAdapter.doPropagateAssertObject(CompositeObjectSinkAdapter.java:450) at org.drools.reteoo.CompositeObjectSinkAdapter.propagateAssertObject(CompositeObjectSinkAdapter.java:378) at org.drools.reteoo.ObjectTypeNode.assertObject(ObjectTypeNode.java:190) at org.drools.reteoo.EntryPointNode.assertObject(EntryPointNode.java:145) at org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:1174) at org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:1123) at org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:917) at org.drools.impl.StatefulKnowledgeSessionImpl.insert(StatefulKnowledgeSessionImpl.java:251) at org.drools.impl.StatelessKnowledgeSessionImpl.execute(StatelessKnowledgeSessionImpl.java:300) at es.tid.tesco.ur.dataprocessing.ruleengine.impl.RuleEngineUpgradeImpl.execute(RuleEngineUpgradeImpl.java:64) at ... Some suggestion? Thanks again. -- View this message in context: http://drools.46999.n3.nabble.com/SPREADSHEET-DECISION-TABLE-Can-I-use-functions-into-CONDITIONS-tp2899330p2922521.html Sent from the Drools: User forum mailing list archive at Nabble.com. _______________________________________________ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users