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Exception about workflow

Question asked by rock_tu on Mar 31, 2014
Latest reply on Apr 1, 2014 by cgiuliano
Hello All
I custom a advanced workflow, but when I am ending the task,there is some error"
org.activiti.engine.ActivitiException: No outgoing sequence flow of the exclusive gateway 'reviewDecision1' could be selected for continuing the process" Any one can help me? what's the matter case the trouble,the code about reviewDecision1 are
exclusiveGateway id="reviewDecision1" name="Exclusive Gateway" exclusiveGateway
sequenceFlow id="flow2" sourceRef="reviewTask1" targetRef="reviewDecision1" sequenceFlow
sequenceFlow id="flow3" sourceRef="reviewDecision1" targetRef="approveTask1"
      conditionExpression xsi:type="tFormalExpression">${wf_reviewOutcome == 'Approve'}       conditionExpression
sequenceFlow,Thanks a lot!