diff --git a/IRaCIS.Core.Application/Service/Reading/ReadingImageTask/ReadingImageTaskService.cs b/IRaCIS.Core.Application/Service/Reading/ReadingImageTask/ReadingImageTaskService.cs
index 68cf6034e..c8a2307a1 100644
--- a/IRaCIS.Core.Application/Service/Reading/ReadingImageTask/ReadingImageTaskService.cs
+++ b/IRaCIS.Core.Application/Service/Reading/ReadingImageTask/ReadingImageTaskService.cs
@@ -2071,7 +2071,7 @@ namespace IRaCIS.Application.Services
             rowInfo.FristAddTaskId = inDto.RowId == null ? inDto.VisitTaskId : rowInfo.FristAddTaskId;
             if (inDto.RowId == null)
             {
-                rowInfo.FromMark = inDto.FromMark == null ? string.Empty : inDto.FromMark.Value;
+                rowInfo.FromMark = inDto.FromMark ?? string.Empty;
                 //await _readingTableAnswerRowInfoRepository.BatchDeleteNoTrackingAsync(x => x.VisitTaskId == inDto.VisitTaskId && x.RowIndex == inDto.RowIndex && x.QuestionId == inDto.QuestionId);
 
                 List<ReadingTableQuestionAnswer> answerList = inDto.AnswerList.Select(x => new ReadingTableQuestionAnswer()