diff --git a/Tiobon.Core.Model/ViewModels/Extend/CoursePublicSearchField.cs b/Tiobon.Core.Model/ViewModels/Extend/CoursePublicSearchField.cs
index 7661c50a..5745392e 100644
--- a/Tiobon.Core.Model/ViewModels/Extend/CoursePublicSearchField.cs
+++ b/Tiobon.Core.Model/ViewModels/Extend/CoursePublicSearchField.cs
@@ -36,6 +36,6 @@ public class CoursePublic
     public string ExamDate { get; set; }
     public string ExamBeginDate { get; set; }
     public string ExamEndDate { get; set; }
-    public string DisableBtn { get; set; }
+    public bool? DisableBtn { get; set; }
     public string BtnActionType { get; set; } = "Add";
 }
\ No newline at end of file
diff --git a/Tiobon.Core.Services/Ghre/Ghre_CourseServices.cs b/Tiobon.Core.Services/Ghre/Ghre_CourseServices.cs
index ef816af2..5ba643dd 100644
--- a/Tiobon.Core.Services/Ghre/Ghre_CourseServices.cs
+++ b/Tiobon.Core.Services/Ghre/Ghre_CourseServices.cs
@@ -498,7 +498,7 @@ public class Ghre_CourseServices : BaseServices<Ghre_Course, Ghre_CourseDto, Ins
                               ExamBeginDate,
                            NULL
                               ExamEndDate,
-                           'false'
+                            CAST('0' AS BIT)
                               DisableBtn
                     FROM Ghre_Course A
                     WHERE A.IsOPen = 'true' AND A.IsEnable = 1";