diff --git a/IRaCIS.Core.Application/Service/ReadingCalculate/LuganoCalculateService.cs b/IRaCIS.Core.Application/Service/ReadingCalculate/LuganoCalculateService.cs
index 252c616a9..9de580fbe 100644
--- a/IRaCIS.Core.Application/Service/ReadingCalculate/LuganoCalculateService.cs
+++ b/IRaCIS.Core.Application/Service/ReadingCalculate/LuganoCalculateService.cs
@@ -400,7 +400,7 @@ namespace IRaCIS.Core.Application.Service.ReadingCalculate
             if (lowPddTaskid != null && lowPddTaskid != default(Guid))
             {
 
-                var lowPPDAnswerList = await _readingTableQuestionAnswerRepository.Where(x => visitTaskIds.Contains(x.VisitTaskId)
+                var lowPPDAnswerList = await _readingTableQuestionAnswerRepository.Where(x =>x.VisitTaskId== lowPddTaskid
               && x.QuestionId == inDto.QuestionId
              && x.RowIndex == inDto.RowIndex).Include(x => x.ReadingTableQuestionTrial)
                   .Select(x => new