When i try to get return value from the method of the class mentioned in the Java task ... i get following nullpointerException ... Have no clue how to get rid of this... I am very well able to call the method with input object and all, but for some reason i get NullPointerException on line... String out = (String)executionService.getVariable(pid, "answer1"); And this is the exception ... java.lang.NullPointerException at org.jbpm.pvm.internal.cmd.GetExecutionVariablesCmd.execute(GetExecutionVariablesCmd.java:60) at org.jbpm.pvm.internal.cmd.GetExecutionVariablesCmd.execute(GetExecutionVariablesCmd.java:36) at org.jbpm.pvm.internal.svc.DefaultCommandService.execute(DefaultCommandService.java:42) at org.jbpm.pvm.internal.tx.StandardTransactionInterceptor.execute(StandardTransactionInterceptor.java:54) at org.jbpm.pvm.internal.svc.EnvironmentInterceptor.execute(EnvironmentInterceptor.java:54) at org.jbpm.pvm.internal.svc.RetryInterceptor.execute(RetryInterceptor.java:55) at org.jbpm.pvm.internal.svc.ExecutionServiceImpl.getVariable(ExecutionServiceImpl.java:130) my java task xml is ... | <java class="com.abc.MyClass" g="173,70,175,58" method="test" var="answer" name="Retrieve Application" > | <arg><object expr="#{input.apre.force}"/></arg> | Thanks View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4251288#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...