topic Multiple instance variable not found.... in Alfresco Archive https://connect.hyland.com/t5/alfresco-archive/multiple-instance-variable-not-found/m-p/94628#M64846 <HTML><HEAD></HEAD><BODY><SPAN>Hello Everbody My name is Rafael Cadenas I'm from Venezuela, now I'm moving to Activiti 5.x from jBPM3.x and of course been testing the engine. Right now I'm facing the problem:</SPAN><BR /><BR /><SPAN>org.activiti.engine.ActivitiException: Variable usuarios' is not a Collection</SPAN><BR /><BR /><SPAN>Basically I'm trying to recreate the scenario where multiple instances of a task are created setting a list of three users to it.</SPAN><BR /><BR /><SPAN>This is my configuration…</SPAN><BR /><BR /><SPAN>The Process BPMN</SPAN><BR /><BR /><PRE class="language-none line-numbers"><CODE>&lt;definitions xmlns="<A href="http://www.omg.org/spec/BPMN/20100524/MODEL" rel="nofollow noopener noreferrer">http://www.omg.org/spec/BPMN/20100524/MODEL</A>" xmlns:xsi="<A href="http://www.w3.org/2001/XMLSchema-instance" rel="nofollow noopener noreferrer">http://www.w3.org/2001/XMLSchema-instance</A>" xmlns:activiti="<A href="http://activiti.org/bpmn" rel="nofollow noopener noreferrer">http://activiti.org/bpmn</A>" xmlns:bpmndi="<A href="http://www.omg.org/spec/BPMN/20100524/DI" rel="nofollow noopener noreferrer">http://www.omg.org/spec/BPMN/20100524/DI</A>" xmlns:omgdc="<A href="http://www.omg.org/spec/DD/20100524/DC" rel="nofollow noopener noreferrer">http://www.omg.org/spec/DD/20100524/DC</A>" xmlns:omgdi="<A href="http://www.omg.org/spec/DD/20100524/DI" rel="nofollow noopener noreferrer">http://www.omg.org/spec/DD/20100524/DI</A>" typeLanguage="<A href="http://www.w3.org/2001/XMLSchema" rel="nofollow noopener noreferrer">http://www.w3.org/2001/XMLSchema</A>" expressionLanguage="<A href="http://www.w3.org/1999/XPath" rel="nofollow noopener noreferrer">http://www.w3.org/1999/XPath</A>" targetNamespace="<A href="http://www.activiti.org/test" rel="nofollow noopener noreferrer">http://www.activiti.org/test</A>"&gt;<BR />&nbsp; &lt;process id="Process-test" name="process-test"&gt;<BR />&nbsp;&nbsp;&nbsp; &lt;documentation&gt;Place documentation for the 'process-test' process here.&lt;/documentation&gt;<BR />&nbsp;&nbsp;&nbsp; &lt;startEvent id="startevent1" name="Start"&gt;&lt;/startEvent&gt;<BR />&nbsp;&nbsp;&nbsp; &lt;userTask id="sayHelloTask" name="Hello Activiti" activiti:assignee="Rafael"&gt;<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &lt;extensionElements&gt;<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &lt;activiti:taskListener event="create" class="com.odebrecht.activiti.assigment.MultiInstanceAssigment"&gt;&lt;/activiti:taskListener&gt;<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &lt;/extensionElements&gt;<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &lt;multiInstanceLoopCharacteristics isSequential="false"&gt;<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &lt;loopDataInputRef&gt;usuarios&lt;/loopDataInputRef&gt;<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &lt;inputDataItem name="${assignee}"&gt;&lt;/inputDataItem&gt;<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &lt;/multiInstanceLoopCharacteristics&gt;<BR />&nbsp;&nbsp;&nbsp; &lt;/userTask&gt;<BR />&nbsp;&nbsp;&nbsp; &lt;sequenceFlow id="flow1" name="" sourceRef="startevent1" targetRef="sayHelloTask"&gt;&lt;/sequenceFlow&gt;<BR />&nbsp;&nbsp;&nbsp; &lt;endEvent id="endevent1" name="End"&gt;&lt;/endEvent&gt;<BR />&nbsp;&nbsp;&nbsp; &lt;sequenceFlow id="flow2" name="" sourceRef="sayHelloTask" targetRef="endevent1"&gt;&lt;/sequenceFlow&gt;<BR />&nbsp; &lt;/process&gt;<BR />&nbsp; &lt;bpmndi:BPMNDiagram id="BPMNDiagram_Process-test"&gt;<BR />&nbsp;&nbsp;&nbsp; &lt;bpmndi:BPMNPlane bpmnElement="Process-test" id="BPMNPlane_Process-test"&gt;<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &lt;bpmndi:BPMNShape bpmnElement="startevent1" id="BPMNShape_startevent1"&gt;<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &lt;omgdc:Bounds height="35" width="35" x="150" y="120"&gt;&lt;/omgdc:Bounds&gt;<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &lt;/bpmndi:BPMNShape&gt;<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &lt;bpmndi:BPMNShape bpmnElement="sayHelloTask" id="BPMNShape_sayHelloTask"&gt;<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &lt;omgdc:Bounds height="55" width="105" x="290" y="110"&gt;&lt;/omgdc:Bounds&gt;<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &lt;/bpmndi:BPMNShape&gt;<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &lt;bpmndi:BPMNShape bpmnElement="endevent1" id="BPMNShape_endevent1"&gt;<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &lt;omgdc:Bounds height="35" width="35" x="500" y="120"&gt;&lt;/omgdc:Bounds&gt;<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &lt;/bpmndi:BPMNShape&gt;<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &lt;bpmndi:BPMNEdge bpmnElement="flow1" id="BPMNEdge_flow1"&gt;<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &lt;omgdi:waypoint x="185" y="137"&gt;&lt;/omgdi:waypoint&gt;<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &lt;omgdi:waypoint x="290" y="137"&gt;&lt;/omgdi:waypoint&gt;<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &lt;/bpmndi:BPMNEdge&gt;<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &lt;bpmndi:BPMNEdge bpmnElement="flow2" id="BPMNEdge_flow2"&gt;<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &lt;omgdi:waypoint x="395" y="137"&gt;&lt;/omgdi:waypoint&gt;<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &lt;omgdi:waypoint x="500" y="137"&gt;&lt;/omgdi:waypoint&gt;<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &lt;/bpmndi:BPMNEdge&gt;<BR />&nbsp;&nbsp;&nbsp; &lt;/bpmndi:BPMNPlane&gt;<BR />&nbsp; &lt;/bpmndi:BPMNDiagram&gt;<BR />&lt;/definitions&gt;<SPAN class="line-numbers-rows"><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN></SPAN></CODE></PRE><BR /><SPAN>The Listener…</SPAN><BR /><BR /><PRE class="language-none line-numbers"><CODE><BR />package com.odebrecht.activiti.assigment;<BR /><BR />import java.util.ArrayList;<BR />import java.util.List;<BR /><BR />import org.activiti.engine.delegate.DelegateTask;<BR />import org.activiti.engine.delegate.TaskListener;<BR /><BR />public class MultiInstanceAssigment implements TaskListener{<BR /><BR />&nbsp;&nbsp;&nbsp;@Override<BR />&nbsp;&nbsp;&nbsp;public void notify(DelegateTask dt) {<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;ArrayList&lt;String&gt; usuarios = new ArrayList&lt;String&gt;();<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;usuarios.add("rcadenas");<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;usuarios.add("carlos");<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;usuarios.add("yonatha");<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;dt.setVariable("usuarios", usuarios);<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR />&nbsp;&nbsp;&nbsp;}<BR /><BR />}<BR /><SPAN class="line-numbers-rows"><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN></SPAN></CODE></PRE><BR /><SPAN>Please let me know what I am doing wrong here….</SPAN></BODY></HTML> Fri, 17 Aug 2012 14:54:31 GMT cantwait 2012-08-17T14:54:31Z Multiple instance variable not found.... https://connect.hyland.com/t5/alfresco-archive/multiple-instance-variable-not-found/m-p/94628#M64846 Hello Everbody My name is Rafael Cadenas I'm from Venezuela, now I'm moving to Activiti 5.x from jBPM3.x and of course been testing the engine. Right now I'm facing the problem<IMG id="smileysurprised" class="emoticon emoticon-smileysurprised" src="https://migration33.stage.lithium.com/i/smilies/16x16_smiley-surprised.png" alt="Smiley Surprised" title="Smiley Surprised" />rg.activiti.engine.ActivitiException: Variable usuarios' is not a CollectionBasically I'm trying to recreate the scenario Fri, 17 Aug 2012 14:54:31 GMT https://connect.hyland.com/t5/alfresco-archive/multiple-instance-variable-not-found/m-p/94628#M64846 cantwait 2012-08-17T14:54:31Z Re: Multiple instance variable not found.... https://connect.hyland.com/t5/alfresco-archive/multiple-instance-variable-not-found/m-p/94629#M64847 <HTML><HEAD></HEAD><BODY><SPAN>If I'm not mistaken, the task-listener is fired AFTER the multi-instances have been set up… So you should create the list of loops BEFORE the tasks are created (eg. pass in when starting process of execution-listener at process start) instead of setting the variable in the task-listener.</SPAN></BODY></HTML> Thu, 27 Sep 2012 14:02:04 GMT https://connect.hyland.com/t5/alfresco-archive/multiple-instance-variable-not-found/m-p/94629#M64847 frederikherema1 2012-09-27T14:02:04Z