diff --git a/config/services.yaml b/config/services.yaml
index f43615c..8b81a90 100644
--- a/config/services.yaml
+++ b/config/services.yaml
@@ -18,8 +18,8 @@ services:
         autoconfigure: true # Automatically registers your services as commands, event subscribers, etc.
         bind:
             # bind examples
-            #string $environment: '%kernel.environment%'
-            #string $debug: '%kernel.debug%'
+            string $environment: '%kernel.environment%'
+            bool $debug: '%kernel.debug%'
 
     # makes classes in src/ available to be used as services
     # this creates a service per class whose id is the fully-qualified class name
diff --git a/src/Controller/HelloWorldAction.php b/src/Controller/HelloWorldAction.php
index 458e5bc..dc6a22e 100644
--- a/src/Controller/HelloWorldAction.php
+++ b/src/Controller/HelloWorldAction.php
@@ -11,6 +11,8 @@
 use Symfony\Component\Routing\Attribute\Route;
 
 /**
+ * We use the two binds we have defined in config/services.yaml.
+ *
  * @see HelloWorldTest
  */
 #[AsController]
@@ -18,8 +20,11 @@
 final class HelloWorldAction extends AbstractController
 {
     #[Route(path: '/hello-world', name: self::class)]
-    public function __invoke(): Response
+    public function __invoke(string $environment, bool $debug): Response
     {
-        return $this->render(self::class.'.html.twig');
+        return $this->render(self::class.'.html.twig', [
+            'environment' => $environment,
+            'debug' => $debug,
+        ]);
     }
 }
diff --git a/templates/App/Controller/HelloWorldAction.html.twig b/templates/App/Controller/HelloWorldAction.html.twig
index 6f94974..c184db5 100644
--- a/templates/App/Controller/HelloWorldAction.html.twig
+++ b/templates/App/Controller/HelloWorldAction.html.twig
@@ -7,4 +7,12 @@
 
     <p>This a simple hello world page without any heavy process.
         Just a basic Twig template rendering.</p>
+
+    <p>These two parameters are injected in the controller action thanks to services binds.
+        (@see <code>config/services.yaml</code>)</p>
+
+    <ul>
+        <li>Environment: <b>{{ environment }}</b></li>
+        <li>debug: <b>{{ debug ? 'true' : 'false' }}</b></li>
+    </ul>
 {% endblock %}