diff --git a/js-lib/examples/cdn/www/index.html b/js-lib/examples/cdn/www/index.html
index 9461a94..564be81 100644
--- a/js-lib/examples/cdn/www/index.html
+++ b/js-lib/examples/cdn/www/index.html
@@ -12,8 +12,18 @@ <h1>Welcome to My Trame Client</h1>
         <button class="subtract">Subtract</button> 
         <div class="count">from HTML</div>
     </main>
-	<script crossorigin="anonymous" src="https://www.unpkg.com/@kitware/trame@0.0.1/dist/trame.umd.js"></script>
+	<script crossorigin="anonymous" src="https://www.unpkg.com/@kitware/trame/dist/trame.umd.js"></script>
     <script>
+        const trame = new Trame();
+        trame.connect().then((config) => {
+            console.log(config);
+
+            trame.state.watch(["count"], (count) => {
+                document.querySelector(".count").innerHTML = count;
+            });
+            document.querySelector(".add").addEventListener("click", () => trame.trigger("add"));
+            document.querySelector(".subtract").addEventListener("click", () => trame.trigger("subtract"));
+        });
     </script>
   </body>
 </html>
\ No newline at end of file
diff --git a/js-lib/package.json b/js-lib/package.json
index 573f08e..c5e0a00 100644
--- a/js-lib/package.json
+++ b/js-lib/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@kitware/trame",
-  "version": "0.0.2",
+  "version": "0.0.3",
   "license": "MIT",
   "main": "./dist/trame.umd.js",
   "unpkg": "./dist/trame.umd.js",
diff --git a/js-lib/src/state.js b/js-lib/src/state.js
index 432c8da..da920b2 100644
--- a/js-lib/src/state.js
+++ b/js-lib/src/state.js
@@ -11,8 +11,8 @@ export class State {
     this._mtime = 0;
     this._ready = false;
     this._listeners =
-      oldState?._listeners || ListenerManager("trame state change");
-    this._watchers = oldState?._watchers || WatcherManager();
+      oldState?._listeners || new ListenerManager("trame state change");
+    this._watchers = oldState?._watchers || new WatcherManager();
     this._subscriptions = [];
     this._wslinkSubscriptions = [];
     this._subscriptions.push(