diff --git a/2meet-data-optimizer-hivepress-addon.php b/2meet-data-optimizer-hivepress-addon.php
index fca2af6..dc9502b 100644
--- a/2meet-data-optimizer-hivepress-addon.php
+++ b/2meet-data-optimizer-hivepress-addon.php
@@ -3,7 +3,7 @@
  * Plugin Name:       2meet Data Optimizer — Hivepress AddOn
  * Plugin URI:        https://2meet.io/2meet-data-optimizer/hivepress
  * Description:       HivePress + 12 擴充整合：13 adapter (core/reviews/bookings/messages/memberships/requests/favorites/statistics/tags/seo/social-links/blocks/marketplace) + 7 HPCT interceptor + 5 query interceptor + admin tab + CLI namespace
- * Version:           0.5.1
+ * Version:           0.5.2
  * Requires at least: 6.0
  * Tested up to:      6.9.4
  * Requires PHP:      8.1
@@ -24,7 +24,7 @@ if ( ! defined( 'ABSPATH' ) ) {
 	exit;
 }
 
-define( 'TMDO_HIVEPRESS_VERSION', '0.5.1' );
+define( 'TMDO_HIVEPRESS_VERSION', '0.5.2' );
 define( 'TMDO_HIVEPRESS_PATH', plugin_dir_path( __FILE__ ) );
 define( 'TMDO_HIVEPRESS_URL', plugin_dir_url( __FILE__ ) );
 define( 'TMDO_HIVEPRESS_FILE', __FILE__ );
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 22cad94..51c034a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -11,6 +11,16 @@ Versioning follows [Semantic Versioning](https://semver.org/).
 
 ---
 
+## [0.5.2] — 2026-10-05 — attribute bridge 的 meta key
+
+### Fixed
+
+- **`TMDO_HivePress_Attribute_Bridge` 組出正確的 meta key**：HivePress 把每個模型的屬性存成
+  `hp_{slug}`（例如 `hp_warranty`），不是 `hp_{model}_{slug}`。舊的 key 在資料庫裡不存在，
+  照它建議的欄位登記後永遠是空的。
+
+---
+
 ## [0.5.1] — 2026-10-02 — 重新打包
 
 ### Changed
diff --git a/includes/hivepress/class-tmdo-hivepress-attribute-bridge.php b/includes/hivepress/class-tmdo-hivepress-attribute-bridge.php
index 7658905..f8b71cd 100644
--- a/includes/hivepress/class-tmdo-hivepress-attribute-bridge.php
+++ b/includes/hivepress/class-tmdo-hivepress-attribute-bridge.php
@@ -20,7 +20,7 @@
  * Usage:
  *   $bridge = new TMDO_HivePress_Attribute_Bridge();
  *   $candidates = $bridge->discover_attributes();
- *   // returns: [['slug' => 'beds', 'type' => 'integer', 'filterable' => true, 'searchable' => true, 'meta_key' => 'hp_listing_beds'], ...]
+ *   // returns: [['slug' => 'beds', 'type' => 'integer', 'filterable' => true, 'searchable' => true, 'meta_key' => 'hp_beds'], ...]
  *
  * @package WP_Data_Optimizer
  * @since   3.0.0
@@ -123,7 +123,8 @@ if ( ! class_exists( 'TMDO_HivePress_Attribute_Bridge' ) ) {
 			return array(
 				'model'      => $model,
 				'slug'       => $slug,
-				'meta_key'   => sprintf( 'hp_%s_%s', $model, $slug ),
+				// HivePress stores every model's attribute as hp_{slug} (e.g. hp_warranty), not hp_{model}_{slug}.
+				'meta_key'   => 'hp_' . $slug,
 				'type'       => (string) ( $cfg['edit_field']['type'] ?? $cfg['search_field']['type'] ?? 'text' ),
 				'filterable' => (bool) ( $cfg['filterable'] ?? false ),
 				'sortable'   => (bool) ( $cfg['sortable'] ?? false ),
diff --git a/tests/unit/AttributeBridgeTest.php b/tests/unit/AttributeBridgeTest.php
index da98834..7e45036 100644
--- a/tests/unit/AttributeBridgeTest.php
+++ b/tests/unit/AttributeBridgeTest.php
@@ -62,7 +62,7 @@ class HivePressAttributeBridgeTest extends TestCase {
 
 		$this->assertSame( 'listing', $record['model'] );
 		$this->assertSame( 'beds', $record['slug'] );
-		$this->assertSame( 'hp_listing_beds', $record['meta_key'] );
+		$this->assertSame( 'hp_beds', $record['meta_key'] );
 		$this->assertSame( 'integer', $record['type'] );
 		$this->assertTrue( $record['filterable'] );
 		$this->assertFalse( $record['sortable'] );