|  | @@ -317,11 +317,12 @@ public class FlowTaskServiceImpl extends BaseServiceImpl<FlowTaskDao, FlowTask>
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				|  |  |      @Override
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				|  |  |      public void removeSign(AddSignTaskForm taskForm) {
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				|  |  |          TaskInfo taskInfo = this.getTask(taskForm.getTaskId());
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				|  |  | +        String collectionName = String.format("%sCollection", taskInfo.getTaskDefinitionKey());
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				|  |  |          Execution miExecution = getMultiInstanceRootExecution(taskInfo.getProcessInstanceId(), taskInfo.getTaskDefinitionKey());
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				|  |  |          Integer nrOfInstances = runtimeService.getVariableLocal(miExecution.getId(), "nrOfInstances", Integer.class);
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				|  |  |          runtimeService.setVariableLocal(miExecution.getId(), "nrOfInstances", nrOfInstances - 1);
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				|  |  |          MultiInstanceLoopCharacteristics loopCharacteristics = getLoopCharacteristics(taskInfo.getProcessInstanceId(), taskInfo.getTaskDefinitionKey());
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				|  |  | -        List<String> assigneeList = runtimeService.getVariable(taskInfo.getProcessInstanceId(), String.format("%sCollection", taskInfo.getTaskDefinitionKey()), List.class);
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				|  |  | +        List<String> assigneeList = runtimeService.getVariable(taskInfo.getProcessInstanceId(), collectionName, List.class);
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				|  |  |          if (loopCharacteristics.isSequential()) {
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				|  |  |              Integer loopCounter = runtimeService.getVariableLocal(taskInfo.getExecutionId(), "loopCounter", Integer.class);
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				|  |  |              if (!assigneeList.subList(loopCounter, assigneeList.size() - 1).contains(taskForm.getAssignee())) {
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				|  | @@ -348,7 +349,7 @@ public class FlowTaskServiceImpl extends BaseServiceImpl<FlowTaskDao, FlowTask>
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				|  |  |              }
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				|  |  |          }
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				|  |  |          assigneeList.remove(taskForm.getAssignee());
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				|  |  | -        runtimeService.setVariable(taskInfo.getProcessInstanceId(), String.format("%sCollection", taskInfo.getTaskDefinitionKey()), assigneeList);
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				|  |  | +        runtimeService.setVariable(taskInfo.getProcessInstanceId(), collectionName, assigneeList);
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				|  |  |      }
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				|  |  |  
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				|  |  |      private MultiInstanceLoopCharacteristics getLoopCharacteristics(String processInstanceId, String taskDefinitionKey) {
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