[rules-users] function call

Hi, I have a simple rule : function String isTrue() { return "true"; } rule "new rule" dialect "mvel" when eval(true) then System.out.println("passe"+isTrue()); end But it seems impossible to call function's : org.mvel.PropertyAccessException: failed to access property: <<System.out.println("passe"+isTrue())>> in: null at org.mvel.optimizers.impl.refl.ReflectiveAccessorOptimizer.compileGetChain(ReflectiveAccessorOptimizer.java:137) at org.mvel.optimizers.impl.refl.ReflectiveAccessorOptimizer.optimizeAccessor(ReflectiveAccessorOptimizer.java:96) at org.mvel.ASTNode.getReducedValueAccelerated(ASTNode.java:194) at org.mvel.MVELRuntime.execute(MVELRuntime.java:87) at org.mvel.MVEL.executeDebugger(MVEL.java:327) at org.drools.base.mvel.MVELConsequence.evaluate(MVELConsequence.java:43) at org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:545) at org.drools.common.DefaultAgenda.fireNextItem(DefaultAgenda.java:509) at org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:430) at org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:392) at mcmipih.rules.demo.service.TestDraft.main(TestDraft.java:37) Caused by: org.mvel.PropertyAccessException: null pointer exception in property: isTrue() at org.mvel.optimizers.impl.refl.ReflectiveAccessorOptimizer.compileGetChain(ReflectiveAccessorOptimizer.java:143) at org.mvel.optimizers.impl.refl.ReflectiveAccessorOptimizer.optimizeAccessor(ReflectiveAccessorOptimizer.java:96) at org.mvel.ASTNode.getReducedValueAccelerated(ASTNode.java:194) at org.mvel.ast.BinaryOperation.getReducedValueAccelerated(BinaryOperation.java:20) at org.mvel.MVELRuntime.execute(MVELRuntime.java:87) at org.mvel.CompiledExpression.getValue(CompiledExpression.java:98) at org.mvel.optimizers.impl.refl.ReflectiveAccessorOptimizer.getMethod(ReflectiveAccessorOptimizer.java:421) at org.mvel.optimizers.impl.refl.ReflectiveAccessorOptimizer.compileGetChain(ReflectiveAccessorOptimizer.java:109) ... 10 more Caused by: java.lang.NullPointerException at org.mvel.optimizers.impl.refl.ReflectiveAccessorOptimizer.getMethod(ReflectiveAccessorOptimizer.java:429) at org.mvel.optimizers.impl.refl.ReflectiveAccessorOptimizer.compileGetChain(ReflectiveAccessorOptimizer.java:109) ... 17 more org.drools.spi.ConsequenceException: org.mvel.PropertyAccessException: failed to access property: <<System.out.println("passe"+isTrue())>> in: null at org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:549) at org.drools.common.DefaultAgenda.fireNextItem(DefaultAgenda.java:509) at org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:430) at org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:392) at mcmipih.rules.demo.service.TestDraft.main(TestDraft.java:37) Caused by: org.mvel.PropertyAccessException: failed to access property: <<System.out.println("passe"+isTrue())>> in: null at org.mvel.optimizers.impl.refl.ReflectiveAccessorOptimizer.compileGetChain(ReflectiveAccessorOptimizer.java:137) at org.mvel.optimizers.impl.refl.ReflectiveAccessorOptimizer.optimizeAccessor(ReflectiveAccessorOptimizer.java:96) at org.mvel.ASTNode.getReducedValueAccelerated(ASTNode.java:194) at org.mvel.MVELRuntime.execute(MVELRuntime.java:87) at org.mvel.MVEL.executeDebugger(MVEL.java:327) at org.drools.base.mvel.MVELConsequence.evaluate(MVELConsequence.java:43) at org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:545) ... 4 more Caused by: org.mvel.PropertyAccessException: null pointer exception in property: isTrue() at org.mvel.optimizers.impl.refl.ReflectiveAccessorOptimizer.compileGetChain(ReflectiveAccessorOptimizer.java:143) at org.mvel.optimizers.impl.refl.ReflectiveAccessorOptimizer.optimizeAccessor(ReflectiveAccessorOptimizer.java:96) at org.mvel.ASTNode.getReducedValueAccelerated(ASTNode.java:194) at org.mvel.ast.BinaryOperation.getReducedValueAccelerated(BinaryOperation.java:20) at org.mvel.MVELRuntime.execute(MVELRuntime.java:87) at org.mvel.CompiledExpression.getValue(CompiledExpression.java:98) at org.mvel.optimizers.impl.refl.ReflectiveAccessorOptimizer.getMethod(ReflectiveAccessorOptimizer.java:421) at org.mvel.optimizers.impl.refl.ReflectiveAccessorOptimizer.compileGetChain(ReflectiveAccessorOptimizer.java:109) ... 10 more Caused by: java.lang.NullPointerException at org.mvel.optimizers.impl.refl.ReflectiveAccessorOptimizer.getMethod(ReflectiveAccessorOptimizer.java:429) at org.mvel.optimizers.impl.refl.ReflectiveAccessorOptimizer.compileGetChain(ReflectiveAccessorOptimizer.java:109) ... 17 more -- View this message in context: http://www.nabble.com/function-call-tf4346267.html#a12382405 Sent from the drools - user mailing list archive at Nabble.com.