diff --git a/IRaCIS.Core.Application/Service/ReadingCalculate/Dto/CriterionCalculateDto.cs b/IRaCIS.Core.Application/Service/ReadingCalculate/Dto/CriterionCalculateDto.cs
index c1964894b..849a25dee 100644
--- a/IRaCIS.Core.Application/Service/ReadingCalculate/Dto/CriterionCalculateDto.cs
+++ b/IRaCIS.Core.Application/Service/ReadingCalculate/Dto/CriterionCalculateDto.cs
@@ -26,7 +26,7 @@ namespace IRaCIS.Core.Application.ViewModel
 	{
 		public Guid RowId { get; set; }
 
-        public decimal RowIndex { get; set; }
+        public string RowIndex { get; set; }
 
 		public decimal AllPPD { get; set; }
 	}
diff --git a/IRaCIS.Core.Application/Service/ReadingCalculate/LuganoCalculateService.cs b/IRaCIS.Core.Application/Service/ReadingCalculate/LuganoCalculateService.cs
index 3eb65ffaa..c7d12d6c6 100644
--- a/IRaCIS.Core.Application/Service/ReadingCalculate/LuganoCalculateService.cs
+++ b/IRaCIS.Core.Application/Service/ReadingCalculate/LuganoCalculateService.cs
@@ -1034,7 +1034,7 @@ namespace IRaCIS.Core.Application.Service.ReadingCalculate
 					result.Add(new GetSplitPPdOutDto()
 					{
 						RowId = answerList.Where(x => x.RowIndex == i).Select(x => x.RowId).FirstOrDefault(),
-                        RowIndex = i,
+                        RowIndex = answerList.Where(x => x.RowIndex == i).Select(x => x.RowIndex).FirstOrDefault().ToString(),
 						AllPPD = answerList.Where(x => x.RowIndex > i && x.RowIndex < (i + 1)).Sum(x => x.Answer),
 					});
 				}