diff --git a/dimensionhub/Views/IndexView.swift b/dimensionhub/Views/IndexView.swift
index 467e5ec..43e59eb 100644
--- a/dimensionhub/Views/IndexView.swift
+++ b/dimensionhub/Views/IndexView.swift
@@ -72,10 +72,12 @@ final class IndexModel {
     
     var dramas: [DramaItem]
     var showUpdateDramas: [UpdateDramaShowItem]
+    var selectedDate: String
     
     init() {
         self.dramas = []
         self.showUpdateDramas = []
+        self.selectedDate = ""
     }
     
     @MainActor
@@ -156,6 +158,7 @@ struct IndexView: View {
                                 .onTapGesture {
                                     selectGroupId = group.groupId
                                     print("current group_id: \(self.selectGroupId)")
+                                    indexModel.selectedDate = group.groupId
                                     showDateNavPopover = true
                                 }
                         case .item(let item):
@@ -180,6 +183,9 @@ struct IndexView: View {
                         }
                     }
                 }
+                .onChange(of: indexModel.selectedDate) { oldValue, newValue in
+                    print("old date: \(oldValue), new value: \(newValue)")
+                }
                 
                 Rectangle()
                     .frame(height: 0)