我有一个简单的审批BPMN工作流流程。我想将用户任务（“批准”）的结果（数据输出？）分配给一个流程变量，然后在该用户任务之后的独占网关中使用该变量。完成任务时，用户任务结果设置在数据/变量映射的Java内。无论我尝试和搜索什么，我都无法使其工作。我一直收到错误“XOR拆分找不到拆分批准的至少一个有效传出连接？”。有人能帮忙吗？

我尝试过指定with和a等等。

我的BPMN来源：

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<definitions xmlns="http://www.omg.org/spec/BPMN/20100524/MODEL"
             xmlns:ns2="http://www.omg.org/spec/DD/20100524/DI"
             xmlns:ns3="http://www.omg.org/spec/DD/20100524/DC"
             xmlns:ns4="http://www.omg.org/spec/BPMN/20100524/DI"
             targetNamespace="http://www.omg.org/bpmn20">

  <itemDefinition id="_approval" isCollection="false" structureRef="java.lang.Boolean"/>

  <process id="modelio-approval"
           name="Process"
           isClosed="false"
           processType="None">

    <property id="approval" name="approval" itemSubjectRef="_approval"/>

    <startEvent id="StartId"
                name="Start"
                isInterrupting="true"
                parallelMultiple="false">
      <outgoing>FromStartToApprove</outgoing>
    </startEvent>

    <sequenceFlow id="FromStartToApprove"
                  name="FromStartToApprove"
                  sourceRef="StartId"
                  targetRef="ApproveId"/>

    <userTask id="ApproveId"
              name="Approve"
              isForCompensation="false"
              startQuantity="1"
              completionQuantity="1">
      <incoming>FromStartToApprove</incoming>
      <outgoing>ToApprovedGateway</outgoing>
      <ioSpecification>
        <dataOutput id="approvalOutRef" itemSubjectRef="_approval" name="approvalOut"/>
        <outputSet id="OutputSet_1">
          <dataOutputRefs>approvalOutRef</dataOutputRefs>
        </outputSet>
      </ioSpecification>
      <dataOutputAssociation id="doAssIdApproval">
        <sourceRef>approvalOutRef</sourceRef>
        <targetRef>approval</targetRef>
      </dataOutputAssociation>
    </userTask>

    <sequenceFlow id="ToApprovedGateway"
                  name="ToApprovedGateway"
                  sourceRef="ApproveId"
                  targetRef="ApprovedGateway"/>

    <exclusiveGateway id="ApprovedGateway"
                      name="Approved?"
                      gatewayDirection="Diverging">
      <incoming>ToApprovedGateway</incoming>
      <outgoing>ToFinish</outgoing>
      <outgoing>ToDisapproved</outgoing>
    </exclusiveGateway>

    <sequenceFlow id="ToFinish"
                  name="ToFinish"
                  sourceRef="ApprovedGateway"
                  targetRef="FinishId">
      <conditionExpression>approval == true</conditionExpression>
    </sequenceFlow>

    <sequenceFlow id="ToDisapproved"
                  name="disapproved"
                  sourceRef="ApprovedGateway"
                  targetRef="DisapprovedId">
      <conditionExpression>approval == false</conditionExpression>
    </sequenceFlow>

    <userTask id="FinishId"
              name="Finish"
              isForCompensation="false"
              startQuantity="1"
              completionQuantity="1">
      <incoming>ToFinish</incoming>
      <outgoing>ToEnd</outgoing>
    </userTask>

    <sequenceFlow sourceRef="FinishId"
                  targetRef="EndId"
                  name="ToEnd"
                  id="ToEnd"/>

    <endEvent id="EndId" name="End">
      <incoming>ToEnd</incoming>
    </endEvent>

    <endEvent id="DisapprovedId" name="Disapproved">
      <incoming>ToDisapproved</incoming>
    </endEvent>

  </process>

</definitions>

在Java代码中，我尝试在“审批”用户任务上设置任务“审批”数据，如下所示：

Map<String, Object> data = new HashMap(1);
data.put("approvalOut", true);
taskService.complete(taskId, userId, data);

但错误消息总是：

错误：[modelio-批准：25-批准？： 6]-XOR拆分找不到至少一个有效的传出连接用于拆分批准？

我希望流转到“Finish”任务（序列流“ToFinish”），但得到错误“XOR拆分找不到至少一个有效的传出连接用于拆分Ap的？”。

我应该使用数据输入而不是输出吗？taskService.完成（taskId， userId，data）；实际设置了什么？不幸的是没有Javadoc。