diff --git a/IRaCIS.Core.Application/Service/Reading/Dto/ReadingImageTaskViewModel.cs b/IRaCIS.Core.Application/Service/Reading/Dto/ReadingImageTaskViewModel.cs
index 150ed2e9d..886233c8c 100644
--- a/IRaCIS.Core.Application/Service/Reading/Dto/ReadingImageTaskViewModel.cs
+++ b/IRaCIS.Core.Application/Service/Reading/Dto/ReadingImageTaskViewModel.cs
@@ -80,7 +80,7 @@ namespace IRaCIS.Core.Application.Service.Reading.Dto
 
         public string TypeValue { get; set; }
 
-        public string AnswerGroup { get; set; }
+        public List<string> AnswerGroup { get; set; }
 
 
     }
diff --git a/IRaCIS.Core.Application/Service/Reading/ReadingImageTaskService.cs b/IRaCIS.Core.Application/Service/Reading/ReadingImageTaskService.cs
index f3bc4d34f..a36fcc753 100644
--- a/IRaCIS.Core.Application/Service/Reading/ReadingImageTaskService.cs
+++ b/IRaCIS.Core.Application/Service/Reading/ReadingImageTaskService.cs
@@ -170,7 +170,7 @@ namespace IRaCIS.Application.Services
             var result = await _readingQuestionTrialRepository.Where(x => x.ReadingQuestionCriterionTrialId == inDto.ReadingQuestionCriterionTrialId && x.IsJudgeQuestion)
                 .Select(x => new GetTrialCriterionJudgeQuestionListOutDto()
                 {
-                    AnswerGroup = x.AnswerGroup,
+                    AnswerGroup = JsonConvert.DeserializeObject<List<string>>(x.AnswerGroup.IsNullOrEmpty()?"[]": x.AnswerGroup),
                     QuestionName = x.QuestionName,
                     TypeValue =x.TypeValue,
                     ReadingQuestionTrialId = x.Id