diff --git a/README.md b/README.md
index 06079ae..3509ac8 100644
--- a/README.md
+++ b/README.md
@@ -449,4 +449,18 @@ $mockFactory
     })
     ->createMock(Date::class, ['a' => 1]);
 
+```
+You can get the parameters sent to the constructor as soon as it is instanced.
+```php
+
+$mockMethod = new MockMethod();
+
+
+$mockFactory = new MockFactory($mockMethod);
+$mockFactory->onInstanceCreated(function (Date $dateInstance, string $date) {
+    //$dateInstance
+    //$date 2022-12-12
+
+});
+$dateInstance = $mockFactory->createMock(Date::class, ['date' => '2022-12-12'], true);
 ```
\ No newline at end of file
diff --git a/src/MockClassGenerator.php b/src/MockClassGenerator.php
index ab661c2..91ed776 100644
--- a/src/MockClassGenerator.php
+++ b/src/MockClassGenerator.php
@@ -29,15 +29,18 @@ public function generate(string $mockClassName, string $class, bool $overrideCon
         if ($overrideConstruct) {
             $mockCode .= "    public function __construct({$this->mockMethodInterface} \$mockFactory, array \$params = []) {\n";
             $mockCode .= $defineMockFactory;
+            $mockCode.="     \$mockFactory->getMockMethod('object.on.created')(\$this,...\$params);\n";
         } elseif ($reflection->hasMethod('__construct')) {
             $mockCode .= "    public function __construct(\$mockFactory, array \$params = []) {\n";
             $mockCode .= $defineMockFactory;
             $mockCode .= "        parent::__construct(...\$params);\n";
+            $mockCode.="         \$mockFactory->getMockMethod('object.on.created')(\$this,...\$params);\n";
         } else {
             $mockCode .= "    public function __construct(\$mockFactory) {\n";
             $mockCode .= $defineMockFactory;
+            $mockCode.="\$mockFactory->getMockMethod('object.on.created')(\$this,\$params=[]);\n";
         }
-        $mockCode.="\$mockFactory->getMockMethod('object.on.created')(\$this,\$params=[]);\n";
+
         $mockCode .= "    }\n";
 
 
diff --git a/src/MockFactory.php b/src/MockFactory.php
index 8205238..a9019b8 100644
--- a/src/MockFactory.php
+++ b/src/MockFactory.php
@@ -18,7 +18,7 @@ class MockFactory
      */
     public function __construct(private MockMethodInterface $mockMethod = new MockMethod())
     {
-        $this->mockMethod->mockMethod('object.on.created', fn() => null);
+        $this->mockMethod->mockMethod('object.on.created', fn(...$args) => null);
     }
 
     public static function from(MockMethod $mockMethod):self