diff --git a/MDM/Models/Recipe/Dto/PfRecipeParametersDto.cs b/MDM/Models/Recipe/Dto/PfRecipeParametersDto.cs
index bf0a5ee..50bdcc2 100644
--- a/MDM/Models/Recipe/Dto/PfRecipeParametersDto.cs
+++ b/MDM/Models/Recipe/Dto/PfRecipeParametersDto.cs
@@ -27,9 +27,9 @@ namespace RIZO.Model.MES.recipe.Dto
 
         public string? Unit { get; set; }
 
-        public decimal? UpperLimit { get; set; }
+        public decimal UpperLimit { get; set; }
 
-        public decimal? LowerLimit { get; set; }
+        public decimal LowerLimit { get; set; }
 
         public string? StandardValue { get; set; }
 
@@ -43,7 +43,7 @@ namespace RIZO.Model.MES.recipe.Dto
 
         public DateTime? UpdatedTime { get; set; }
 
-        public int? Ifcheck { get; set; }
+        public int Ifcheck { get; set; }
 
     }
 }
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