diff --git a/src/Operation/Strategies/AddOperation.php b/src/Operation/Strategies/AddOperation.php
index 0c48cbf..60c766c 100644
--- a/src/Operation/Strategies/AddOperation.php
+++ b/src/Operation/Strategies/AddOperation.php
@@ -21,8 +21,14 @@ public function apply(array &$data, string $path, mixed $value = null): void
 
         if (Arr::isArray($arrData) && !empty($arrData)) {
             if (Arr::isArray($value)) {
-                foreach ($value as $key => $item) {
-                    $arrData[$key] = $item;
+                if (Arr::isList($value)) {
+                    foreach ($value as $item) {
+                        $arrData[] = $item;
+                    }
+                } else {
+                    foreach ($value as $key => $item) {
+                        $arrData[$key] = $item;
+                    }
                 }
             } else {
                 // Add new key-value pair to the array
diff --git a/src/Utils/Arr.php b/src/Utils/Arr.php
index f1448aa..e99f808 100644
--- a/src/Utils/Arr.php
+++ b/src/Utils/Arr.php
@@ -15,6 +15,7 @@
 use function array_key_exists;
 use function is_null;
 use function is_float;
+use function array_is_list;
 
 class Arr
 {
@@ -28,6 +29,16 @@ public static function isArray(mixed $data): bool
         return is_array($data);
     }
 
+    /**
+     * @param array $data
+     *
+     * @return bool
+     */
+    public static function isList(array $data): bool
+    {
+        return array_is_list($data);
+    }
+
     // Get a reference to the value at a given path
     public static function &getReference(&$array, $key)
     {
diff --git a/tests/Unit/Operation/Strategies/AddOperationStrategyTest.php b/tests/Unit/Operation/Strategies/AddOperationStrategyTest.php
index 710aa7a..d6bb325 100644
--- a/tests/Unit/Operation/Strategies/AddOperationStrategyTest.php
+++ b/tests/Unit/Operation/Strategies/AddOperationStrategyTest.php
@@ -57,6 +57,30 @@ public function testAddOperation_WhenGivenNewKey_ReturnsAddedData(): void
         $this->assertEquals('myValue', $data['params']['newSettings']);
     }
 
+    public function testAddOperation_WhenGivenArrayData_ReturnsAddedData(): void
+    {
+        $data = $this->applyOperation('params.settings',
+            [
+                [
+                    'value' => ['id' => 1, 'type' => 'internal']
+                ]
+            ],
+            [
+            'type'   => 'button',
+            'params' => [
+                'variantType' => 'FORM_GIFT_CARD_DETAILS',
+                'settings' => [
+                    [
+                        'value' => ['id' => 1, 'type' => 'internal']
+                    ]
+                ],
+                'variantsStyles' => []
+            ]
+        ]);
+
+        $this->assertEquals(1, $data['params']['settings'][1]['value']['id']);
+    }
+
     protected function applyOperation(string $path, mixed $value, array $data = null): array
     {
         $data ??= [
diff --git a/tests/Unit/QueryEvaluatorTest.php b/tests/Unit/QueryEvaluatorTest.php
index 2145cf5..1bd181c 100644
--- a/tests/Unit/QueryEvaluatorTest.php
+++ b/tests/Unit/QueryEvaluatorTest.php
@@ -98,6 +98,26 @@ public function testEvaluate_WhenGivenWrongOperator_ReturnsFalse(): void
         $this->assertFalse($result);
     }
 
+    public function testEvaluate_WhenGivenWrongOperatorInDetails_ReturnsFalse(): void
+    {
+        $query = [
+            "findBy" => [
+                "AND" => [
+                    [
+                        "key"      => "type",
+                        "value"    => "input",
+                        "operator" => "ABC"
+                    ],
+                ]
+            ]
+        ];
+
+        $queryEvaluator = $this->getInstance();
+        $result = $queryEvaluator->evaluate($this->getData(), $query['findBy']);
+
+        $this->assertFalse($result);
+    }
+
     /**
      * @return array
      */