diff --git a/Assets/VRM10_Samples/VRM10Viewer/UIToolkit/VRM10MainView.cs b/Assets/VRM10_Samples/VRM10Viewer/UIToolkit/VRM10MainView.cs
index 8c680bee0..006291804 100644
--- a/Assets/VRM10_Samples/VRM10Viewer/UIToolkit/VRM10MainView.cs
+++ b/Assets/VRM10_Samples/VRM10Viewer/UIToolkit/VRM10MainView.cs
@@ -78,7 +78,7 @@ namespace UniVRM10.VRM10Viewer
 
             root.Q<Button>("OpenModel").clicked += () =>
             {
-                m_controller.OnOpenModelClicked(MakeLoadOptions());
+                m_controller.OnOpenModelClicked(MakeLoadOptions(), name, nameof(FileSelected));
             };
 
             root.Q<Button>("OpenMotion").clicked += () =>
@@ -370,5 +370,15 @@ namespace UniVRM10.VRM10Viewer
                 Debug.LogException(ex);
             }
         }
+
+        /// <summary>
+        /// for WebGL
+        /// call from OpenFile.jslib
+        /// </summary>
+        public void FileSelected(string url)
+        {
+            UniGLTFLogger.Log($"FileSelected: {url}");
+            StartCoroutine(m_controller.LoadCoroutine(url, MakeLoadOptions()));
+        }
     }
 }
\ No newline at end of file
diff --git a/Assets/VRM10_Samples/VRM10Viewer/VRM10ViewerController.cs b/Assets/VRM10_Samples/VRM10Viewer/VRM10ViewerController.cs
index 178b77314..f44077685 100644
--- a/Assets/VRM10_Samples/VRM10Viewer/VRM10ViewerController.cs
+++ b/Assets/VRM10_Samples/VRM10Viewer/VRM10ViewerController.cs
@@ -138,7 +138,7 @@ namespace UniVRM10.VRM10Viewer
         [DllImport("__Internal")]
         public static extern void WebGL_VRM10_VRM10Viewer_FileDialog(string target, string message);
 
-        string FileDialog()
+        string FileDialog(string callbackObject, string callbackMethod)
         {
 #if UNITY_EDITOR 
             return UnityEditor.EditorUtility.OpenFilePanel("Open VRM", "", "vrm,glb,gltf,zip");
@@ -146,8 +146,8 @@ namespace UniVRM10.VRM10Viewer
             return VRM10FileDialogForWindows.FileDialog("open VRM", "vrm", "glb", "gltf", "zip");
 #elif UNITY_WEBGL
             // Open WebGL_VRM10_VRM10Viewer_FileDialog
-            // see: Assets/UniGLTF/Runtime/Utils/Plugins/OpenFile.jslib
-            WebGL_VRM10_VRM10Viewer_FileDialog("Canvas", "FileSelected");
+            // see: Assets\VRM10_Samples\VRM10Viewer\Plugins\WebGL_VRM10_VRM10Viewer.jslib
+            WebGL_VRM10_VRM10Viewer_FileDialog(callbackObject, callbackMethod);
             // Control flow does not return here. return empty string with dummy
             return null;
 #else
@@ -162,9 +162,9 @@ namespace UniVRM10.VRM10Viewer
             var _ = LoadModelBytes("WebGL.vrm", www.bytes, opts);
         }
 
-        public void OnOpenModelClicked(LoadOptions opts)
+        public void OnOpenModelClicked(LoadOptions opts, string callbackObject, string callbackMethod)
         {
-            var path = FileDialog();
+            var path = FileDialog(callbackObject, callbackMethod);
             _ = LoadModelPath(path, opts);
         }
 
diff --git a/Assets/VRM10_Samples/VRM10Viewer/uGui/VRM10ViewerUI.cs b/Assets/VRM10_Samples/VRM10Viewer/uGui/VRM10ViewerUI.cs
index 3239bfc26..e316d9d7d 100644
--- a/Assets/VRM10_Samples/VRM10Viewer/uGui/VRM10ViewerUI.cs
+++ b/Assets/VRM10_Samples/VRM10Viewer/uGui/VRM10ViewerUI.cs
@@ -188,7 +188,7 @@ namespace UniVRM10.VRM10Viewer
 
             m_version.text = string.Format("VRM10ViewerUI {0}", PackageVersion.VERSION);
 
-            m_openModel.onClick.AddListener(() => m_controller.OnOpenModelClicked(MakeLoadOptions()));
+            m_openModel.onClick.AddListener(() => m_controller.OnOpenModelClicked(MakeLoadOptions(), name, nameof(FileSelected)));
             m_openMotion.onClick.AddListener(m_controller.OnOpenMotionClicked);
             m_pastePose.onClick.AddListener(m_controller.OnPastePoseClicked);
             m_resetSpringBone.onClick.AddListener(m_controller.OnResetSpringBoneClicked);