对对工作流任务批量处理时提示报错：
详细信息：
发生时间：09:11:13
错误来源： Kingdee.BOS.Core
错误信息：Unable to cast object of type 'System.String' to type 'System.Object[]'.
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调用堆栈：
at Kingdee.BOS.Core.Metadata.FieldElement.MulBaseDataField.SetFieldValue(IDynamicFormModel model, DynamicObject activeRow, Object value)
at Kingdee.BOS.Core.DynamicForm.AbstractDynamicFormModel.UpdateFieldValue(Field field, DynamicObject obj, Object value, Int32 row)
at Kingdee.BOS.Core.DynamicForm.AbstractDynamicFormModel.UpdateField(Field field, DynamicObject activeRow, Object value, Int32 rowIndex, Object oldValue)
at Kingdee.BOS.Core.DynamicForm.AbstractDynamicFormModel.SetValue(Field field, DynamicObject activeRow, Object value, Int32 rowIndex)
at Kingdee.BOS.Core.DynamicForm.AbstractDynamicFormModel.SetValue(Field field, Object value, Int32 row)
at Kingdee.BOS.Core.DynamicForm.AbstractDynamicFormModel.SetValue(String key, Object value, Int32 row)
at Kingdee.BOS.Workflow.PlugIns.AssignApprovalBatch.ShowApprovalBill()
at Kingdee.BOS.Workflow.PlugIns.AssignApprovalBatch.AfterBindData(EventArgs e)
at Kingdee.BOS.Core.DynamicForm.PlugIn.DynamicFormViewPlugInProxy.FireAfterBindData(EventArgs e)
at Kingdee.BOS.Web.DynamicForm.DynamicWebFormView.LoadData()
at Kingdee.BOS.Web.DynamicForm.DynamicWebFormController.LoadData()
错误数据： System.Collections.ListDictionaryInternal
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