diff --git a/app/static/js/services/nativeBridgeService.js b/app/static/js/services/nativeBridgeService.js
index b7189b6..092887e 100644
--- a/app/static/js/services/nativeBridgeService.js
+++ b/app/static/js/services/nativeBridgeService.js
@@ -124,8 +124,8 @@
      * data2/data3 (A12): CC value / program / PB LSB|MSB.
      */
     dispatchMidiEvent: function (cmd, channel, pitch, velocity, sampleOffset, data2, data3, live) {
-      _pushEnter = (_pushEnter || 0) + 1;
-      if (_pushEnter % 100 === 0 && window.__sfDiag) window.__sfDiag('PUSH_ENTER cmd=' + cmd + ' ch=' + channel + ' tauri=' + !!this._tauri());
+      this._pushEnter = (this._pushEnter || 0) + 1;
+      if (this._pushEnter % 100 === 0 && window.__sfDiag) window.__sfDiag('PUSH_ENTER cmd=' + cmd + ' ch=' + channel + ' tauri=' + !!this._tauri());
       if (!this._tauri()) return false;
       var safeVelocity = Math.floor(Math.min(1.0, Math.max(0.0, velocity)) * 127);
       var byteCmd;
@@ -135,8 +135,8 @@
         case 'PITCH_BEND': byteCmd = 0xE; break;
         default:          byteCmd = cmd === 'NOTE_ON' ? 0x9 : 0x8; break;
       }
-      _pushSent = (_pushSent || 0) + 1;
-      if (_pushSent % 100 === 0 && window.__sfDiag) window.__sfDiag('PUSH_SENT ' + _pushSent);
+      this._pushSent = (this._pushSent || 0) + 1;
+      if (this.pushSent % 100 === 0 && window.__sfDiag) window.__sfDiag('PUSH_SENT ' + _pushSent);
       // DIAG: Promise.race 800ms — invoke gửi đi nhưng không settle -> timeout
       // (phan biet main-thread block vs Rust hang).
       Promise.race([
@@ -152,10 +152,10 @@
         }),
         new Promise(function (_, rej) { setTimeout(function () { rej(new Error('timeout-800ms')); }, 800); })
       ]).then(function () {
-        _pushOk = (_pushOk || 0) + 1;
+        this._pushOk = (this._pushOk || 0) + 1;
         if ((_pushOk + (_pushFail || 0)) % 100 === 0 && window.__sfDiag) window.__sfDiag('PUSH_MIDI ok=' + _pushOk + ' fail=' + (_pushFail || 0));
       }).catch(function (e) {
-        _pushFail = (_pushFail || 0) + 1;
+        this._pushFail = (this._pushFail || 0) + 1;
         if (_lastPushFail !== String(e)) { _lastPushFail = String(e); if (window.__sfDiag) window.__sfDiag('PUSH_MIDI_FAIL ' + e); }
         console.warn('[BridgeService] push_midi_event:', e);
       });
diff --git a/app/templates/index.html b/app/templates/index.html
index c9628be..4487c07 100644
--- a/app/templates/index.html
+++ b/app/templates/index.html
@@ -39,7 +39,7 @@
     <script src="/static/js/services/storage.js?v=202608038200"></script>
     <script src="/static/js/services/soundfontStorage.js?v=202607271016"></script>
     <script src="/static/js/services/soundfontPlayer.js?v=202608101800"></script>
-    <script src="/static/js/services/nativeBridgeService.js?v=202608250054"></script>
+    <script src="/static/js/services/nativeBridgeService.js?v=202608250116"></script>
     <script src="/static/js/services/bridgeAudioNode.js?v=202608250107"></script>
     <script src="/static/js/services/unifiedMidiRouter.js?v=202608250054"></script>
     <script src="/static/js/services/audioRoutingEngine.js?v=202608250107"></script>