diff --git a/Packages/RealityKitContent/Sources/RealityKitContent/RealityKitContent.rkassets/Scenes/Gesture.usda b/Packages/RealityKitContent/Sources/RealityKitContent/RealityKitContent.rkassets/Scenes/Gesture.usda
index c4b33a9..043275d 100644
--- a/Packages/RealityKitContent/Sources/RealityKitContent/RealityKitContent.rkassets/Scenes/Gesture.usda
+++ b/Packages/RealityKitContent/Sources/RealityKitContent/RealityKitContent.rkassets/Scenes/Gesture.usda
@@ -25,7 +25,7 @@ def Xform "Root"
             uint group = 1
             uniform token info:id = "RealityKit.Collider"
             uint mask = 4294967295
-            token type = "Default"
+            token type = "Trigger"
 
             def RealityKitStruct "Shape"
             {
@@ -33,15 +33,50 @@ def Xform "Root"
                 token shapeType = "Box"
             }
         }
+
+        def RealityKitComponent "HierarchicalFade"
+        {
+            uniform token info:id = "RealityKit.HierarchicalFade"
+        }
     }
 
     def "Sun" (
-        active = false
         prepend references = @../Models/Sun.usdz@
     )
     {
         float3 xformOp:scale = (1, 1, 1)
         uniform token[] xformOpOrder = ["xformOp:translate", "xformOp:orient", "xformOp:scale"]
+
+        def RealityKitComponent "HierarchicalFade"
+        {
+            uniform token info:id = "RealityKit.HierarchicalFade"
+            float opacity = 0
+        }
+
+        def RealityKitComponent "InputTarget"
+        {
+            uniform token info:id = "RealityKit.InputTarget"
+        }
+
+        def RealityKitComponent "Collider"
+        {
+            uint group = 1
+            uniform token info:id = "RealityKit.Collider"
+            uint mask = 4294967295
+            token type = "Trigger"
+
+            def RealityKitStruct "Shape"
+            {
+                float3 extent = (0.2, 0.2, 0.19999999)
+                float radius = 0.1
+                token shapeType = "Sphere"
+
+                def RealityKitStruct "pose"
+                {
+                    float3 position = (3.7252903e-8, 0, 4.8428774e-8)
+                }
+            }
+        }
     }
 }
 
diff --git a/WhatVisionOSCanDo/ShowCase/Gesture/GestureView.swift b/WhatVisionOSCanDo/ShowCase/Gesture/GestureView.swift
index 8e40250..e7a5e96 100644
--- a/WhatVisionOSCanDo/ShowCase/Gesture/GestureView.swift
+++ b/WhatVisionOSCanDo/ShowCase/Gesture/GestureView.swift
@@ -15,6 +15,8 @@ enum GestureToggles {
 
 struct GestureView: View {
     @State private var enabledGesture: GestureToggles = .tap
+    @State private var isNight: Bool = true
+    
 
     var body: some View {
         VStack {
@@ -25,9 +27,16 @@ struct GestureView: View {
                 } catch {
                     print("load entity error, error is \(error)")
                 }
+            } update: { content in
+                let root = content.entities.first
+                let moon = root?.findEntity(named: "Moon")
+                let sun = root?.findEntity(named: "Sun")
+                moon?.components[OpacityComponent.self]?.opacity = isNight ? 1.0 : 0.0
+                sun?.components[OpacityComponent.self]?.opacity = isNight ? 0.0 : 1.0
             }
-            .gesture(enabledGesture == .tap ? TapGesture().targetedToAnyEntity().onEnded { _ in
+            .gesture(enabledGesture == .tap ? TapGesture().targetedToAnyEntity().onEnded { event in
                 print("TapGesture ended")
+                isNight = !isNight
             } : nil)
             .gesture(enabledGesture == .drag ? DragGesture().targetedToAnyEntity().onChanged { value in
                 let location = value.convert(value.gestureValue.location3D, from: .global, to: value.entity.parent!)