diff --git a/G102-sequence/tdv_sdk.js b/G102-sequence/tdv_sdk.js
index 2782bff..52f099e 100644
--- a/G102-sequence/tdv_sdk.js
+++ b/G102-sequence/tdv_sdk.js
@@ -1,4 +1,8 @@
 var tdv_sdk = {
+    mode: 'live',
+    game_code: 'G120',
+    sdk: null, // Instance of external SenaGameSDK
+
     // --- KHO DỮ LIỆU NỘI BỘ ---
     list: [],
     currentQuestion: null,
@@ -109,101 +113,101 @@ var tdv_sdk = {
 
     // --- KHỞI TẠO & LOAD DỮ LIỆU ---
     init: function (config) {
-    var self = this;
-    config = config || {};
-    var urlParams = new URLSearchParams(window.location.search);
+        var self = this;
+        config = config || {};
+        var urlParams = new URLSearchParams(window.location.search);
 
-    this.mode = config.mode || urlParams.get('mode') || 'live';
-    this.game_code = config.game_code || urlParams.get('game_code') || 'SQ_SENTENCE';
+        this.mode = config.mode || urlParams.get('mode') || 'live';
+        this.game_code = config.game_code || urlParams.get('game_code') || 'SQ_SENTENCE';
 
-    // Auto preview
-    if (window.self === window.parent && this.mode === 'live') {
-        console.log("⚠️ Standalone detected - Switching to PREVIEW");
-        this.mode = 'preview';
-    }
+        // Auto preview
+        if (window.self === window.parent && this.mode === 'live') {
+            console.log("⚠️ Standalone detected - Switching to PREVIEW");
+            this.mode = 'preview';
+        }
 
-    // Globals cho Construct 2 (GIỮ)
-    window.answerResult = -1;
-    window.gameState = 0;
+        // Globals cho Construct 2 (GIỮ)
+        window.answerResult = -1;
+        window.gameState = 0;
 
-    // BG
-    var bgParam = urlParams.get('bg');
-    if (bgParam) {
-        this.themeSettings.current_bg = bgParam.startsWith('bg') ? bgParam : "bg" + bgParam;
-    }
+        // BG
+        var bgParam = urlParams.get('bg');
+        if (bgParam) {
+            this.themeSettings.current_bg = bgParam.startsWith('bg') ? bgParam : "bg" + bgParam;
+        }
 
-    console.log(`🚀 TDV SDK Init | Mode: ${this.mode} | Code: ${this.game_code}`);
+        console.log(`🚀 TDV SDK Init | Mode: ${this.mode} | Code: ${this.game_code}`);
 
-    // ===== CHECK SDK =====
-    if (typeof SenaGameSDK === 'undefined') {
-        console.error("❌ SenaGameSDK not found! Fallback to local default data.");
-        setTimeout(function () {
-            self.load(self.defaultData);
-        }, 500);
-        return;
-    }
+        // ===== CHECK SDK =====
+        if (typeof SenaGameSDK === 'undefined') {
+            console.error("❌ SenaGameSDK not found! Fallback to local default data.");
+            setTimeout(function () {
+                self.load(self.defaultData);
+            }, 500);
+            return;
+        }
 
-    // ===== INIT SDK =====
-    this.sdk = new SenaGameSDK({
-        iframePath: './sdk/package/dist/sdk-iframe/index.html',
-        mode: this.mode,
-        gameCode: this.game_code,
-        debug: true,
+        // ===== INIT SDK =====
+        this.sdk = new SenaGameSDK({
+            iframePath: './sdk/package/dist/sdk-iframe/index.html',
+            mode: this.mode,
+            gameCode: this.game_code,
+            debug: true,
 
-        // SDK sẵn sàng → push data
-        onReady: function (sdk) {
-            console.log("✅ SDK Ready → pushing defaultData");
-            sdk.pushData({
-                items: self.defaultData.data   // QUAN TRỌNG: map đúng field
-            });
-        },
-
-        // SDK trả data đã xử lý
-        onDataReady: function (data) {
-            var items = data && data.items ? data.items : [];
-            console.log("📥 SDK DataReady:", items.length);
-
-            if (items.length > 0) {
-                self.serverDataLoaded = true;
-                self.load({
-                    data: items,
-                    blank_count: data.blank_count || self.defaultData.blank_count
+            // SDK sẵn sàng → push data
+            onReady: function (sdk) {
+                console.log("✅ SDK Ready → pushing defaultData");
+                sdk.pushData({
+                    items: self.defaultData.data   // QUAN TRỌNG: map đúng field
                 });
-            } else {
-                console.warn("⚠️ SDK returned empty items");
+            },
+
+            // SDK trả data đã xử lý
+            onDataReady: function (data) {
+                var items = data && data.items ? data.items : [];
+                console.log("📥 SDK DataReady:", items.length);
+
+                if (items.length > 0) {
+                    self.serverDataLoaded = true;
+                    self.load({
+                        data: items,
+                        blank_count: data.blank_count || self.defaultData.blank_count
+                    });
+                } else {
+                    console.warn("⚠️ SDK returned empty items");
+                }
+            },
+
+            // Kết quả từng câu
+            onAnswerResult: function (result) {
+                console.log("📝 Answer Result:", result);
+                self.handleAnswerResult(result);
+            },
+
+            // Game complete
+            onGameComplete: function (result) {
+                console.log("🏁 Game Complete:", result);
+                self.onGameFinished(result);
+            },
+
+            onSessionStart: function (session) {
+                console.log("🎮 Session:", session);
+                self.gameID = session.gameId;
+                self.userId = session.userId;
+            },
+
+            onError: function (error) {
+                console.error("❌ SDK Error:", error);
             }
-        },
+        });
 
-        // Kết quả từng câu
-        onAnswerResult: function (result) {
-            console.log("📝 Answer Result:", result);
-            self.handleAnswerResult(result);
-        },
-
-        // Game complete
-        onGameComplete: function (result) {
-            console.log("🏁 Game Complete:", result);
-            self.onGameFinished(result);
-        },
-
-        onSessionStart: function (session) {
-            console.log("🎮 Session:", session);
-            self.gameID = session.gameId;
-            self.userId = session.userId;
-        },
-
-        onError: function (error) {
-            console.error("❌ SDK Error:", error);
-        }
-    });
-
-    // ===== TIMEOUT FALLBACK =====
-    setTimeout(function () {
-        if (!self.serverDataLoaded) {
-            console.warn("⚠️ SDK timeout → fallback defaultData");
-            self.load(self.defaultData);
-        }
-        }, 5000);
+        // ===== TIMEOUT FALLBACK =====
+        setTimeout(function () {
+            if (!self.serverDataLoaded) {
+                console.warn("⚠️ SDK timeout → fallback defaultData");
+                self.load(self.defaultData);
+            }
+            }, 5000);
     },