diff --git a/src/Carrooi/Menu/IMenuItem.php b/src/Carrooi/Menu/IMenuItem.php
index ee507af..e84681f 100644
--- a/src/Carrooi/Menu/IMenuItem.php
+++ b/src/Carrooi/Menu/IMenuItem.php
@@ -41,12 +41,18 @@ public function getRealLink(): string;
 	public function getRealAbsoluteLink(): string;
 
 
+	public function hasData(string $name): bool;
+
+
 	public function getData(string $type = null, $default = null);
 
 
 	public function setData(array $data): void;
 
 
+	public function addData(string $name, $value): void;
+
+
 	public function isVisibleOnMenu(): bool;
 
 
diff --git a/src/Carrooi/Menu/MenuItem.php b/src/Carrooi/Menu/MenuItem.php
index 4f0291a..34ce721 100644
--- a/src/Carrooi/Menu/MenuItem.php
+++ b/src/Carrooi/Menu/MenuItem.php
@@ -148,13 +148,19 @@ public function getRealAbsoluteLink(): string
 	}
 
 
+	public function hasData(string $name): bool
+	{
+		return array_key_exists($name, $this->data);
+	}
+
+
 	public function getData(string $name = null, $default = null)
 	{
 		if ($name === null) {
 			return $this->data;
 		}
 
-		if (!array_key_exists($name, $this->data)) {
+		if (!$this->hasData($name)) {
 			return $default;
 		}
 
@@ -168,6 +174,12 @@ public function setData(array $data): void
 	}
 
 
+	public function addData(string $name, $value): void
+	{
+		$this->data[$name] = $value;
+	}
+
+
 	public function isVisibleOnMenu(): bool
 	{
 		return $this->visibility['menu'];
diff --git a/tests/CarrooiTests/Menu/MenuItemTest.phpt b/tests/CarrooiTests/Menu/MenuItemTest.phpt
index 9c97536..aa6f3cf 100644
--- a/tests/CarrooiTests/Menu/MenuItemTest.phpt
+++ b/tests/CarrooiTests/Menu/MenuItemTest.phpt
@@ -271,6 +271,23 @@ final class MenuItemTest extends TestCase
 	}
 
 
+	public function testAddData(): void
+	{
+		$linkGenerator = $this->createMockLinkGenerator();
+		$translator = $this->createMockTranslator();
+		$authorizator = $this->createMockAuthorizator();
+		$application = $this->createMockApplication();
+		$request = $this->createMockHttpRequest();
+		$itemFactory = $this->createMockMenuItemFactory();
+
+		$item = new MenuItem($linkGenerator, $translator, $authorizator, $application, $request, $itemFactory, 'item');
+		$item->addData('test', 'data');
+
+		Assert::true($item->hasData('test'));
+		Assert::equal('data', $item->getData('test'));
+	}
+
+
 	public function testVisibility(): void
 	{
 		$linkGenerator = $this->createMockLinkGenerator();