diff --git a/core/mogo-core-function-call/src/main/java/com/mogo/eagle/core/function/call/hmi/CallerHmiViewControlListenerManager.kt b/core/mogo-core-function-call/src/main/java/com/mogo/eagle/core/function/call/hmi/CallerHmiViewControlListenerManager.kt
index f7224e9a94..f37ce94632 100644
--- a/core/mogo-core-function-call/src/main/java/com/mogo/eagle/core/function/call/hmi/CallerHmiViewControlListenerManager.kt
+++ b/core/mogo-core-function-call/src/main/java/com/mogo/eagle/core/function/call/hmi/CallerHmiViewControlListenerManager.kt
@@ -4,6 +4,7 @@ import android.view.View
 import android.view.ViewGroup
 import com.mogo.eagle.core.function.api.hmi.view.IViewControlListener
 import com.mogo.eagle.core.function.call.base.CallerBase
+import com.mogo.eagle.core.function.call.trace.CallerTrace
 import java.util.concurrent.ConcurrentHashMap
 
 /**
@@ -14,6 +15,8 @@ import java.util.concurrent.ConcurrentHashMap
 object CallerHmiViewControlListenerManager : CallerBase<IViewControlListener>() {
 
     private var v2xEventTag = ConcurrentHashMap<String, Int>()
+
+    @Volatile
     private var mainPageVisible = true
 
     /**
@@ -38,6 +41,7 @@ object CallerHmiViewControlListenerManager : CallerBase<IViewControlListener>()
 
     fun invokeMainPageViewVisible(v: Int) {
         mainPageVisible = (v == View.VISIBLE)
+        CallerTrace.write("CallerHmiViewControl","mainPageVisible:$mainPageVisible")
         M_LISTENERS.forEach {
             val listener = it.value
             listener.mainPageViewVisible(v)