diff --git a/mediapipe/MediaPipe.tulsiproj/project.tulsiconf b/mediapipe/MediaPipe.tulsiproj/project.tulsiconf
index 32c553c31..2d91d9797 100644
--- a/mediapipe/MediaPipe.tulsiproj/project.tulsiconf
+++ b/mediapipe/MediaPipe.tulsiproj/project.tulsiconf
@@ -2,7 +2,7 @@
   "configDefaults" : {
     "optionSet" : {
       "BazelBuildOptionsDebug" : {
-        "p" : "--config=debug --strip=never --features=oso_prefix_is_pwd --apple_generate_dsym"
+        "p" : "--strip=never --features=oso_prefix_is_pwd --apple_generate_dsym"
       },
       "CLANG_CXX_LANGUAGE_STANDARD" : {
         "p" : "c++14"
diff --git a/mediapipe/objc/solutions/posetracking_gpu/PoseTracking.h b/mediapipe/objc/solutions/posetracking_gpu/PoseTracking.h
index 547d3f113..d2c5a0584 100644
--- a/mediapipe/objc/solutions/posetracking_gpu/PoseTracking.h
+++ b/mediapipe/objc/solutions/posetracking_gpu/PoseTracking.h
@@ -8,7 +8,6 @@
 #import "mediapipe/objc/MPPCameraInputSource.h"
 #import "mediapipe/objc/MPPLayerRenderer.h"
 #import "mediapipe/objc/MPPPlayerInputSource.h"
-#import "mediapipe/objc/MPPTimestampConverter.h"
 #import "PoseTrackingOptions.h"
 #import "PoseTrackingResults.h"
 @interface PoseTracking : NSObject<MPPInputSourceDelegate>
@@ -18,8 +17,7 @@
 //@property(nonatomic) MPPGraph* mediapipeGraph;
 
 
-// Helps to convert timestamp.
-@property(nonatomic) MPPTimestampConverter* timestampConverter;
+
 
 // Render frames in a layer.
 @property(nonatomic) MPPLayerRenderer* renderer;
diff --git a/mediapipe/objc/solutions/posetracking_gpu/PoseTracking.mm b/mediapipe/objc/solutions/posetracking_gpu/PoseTracking.mm
index a9cc12df2..9c26e919c 100644
--- a/mediapipe/objc/solutions/posetracking_gpu/PoseTracking.mm
+++ b/mediapipe/objc/solutions/posetracking_gpu/PoseTracking.mm
@@ -1,6 +1,7 @@
 #include "PoseTracking.h"
 #include "mediapipe/framework/formats/landmark.pb.h"
 #import "mediapipe/objc/MPPGraph.h"
+#import "mediapipe/objc/MPPTimestampConverter.h"
 
 
 static const char* kVideoQueueLabel = "com.google.mediapipe.example.videoQueue";
@@ -82,11 +83,14 @@ static const char* kLandmarksOutputStream = "pose_landmarks";
 
 @end
 
+
 @interface PoseTracking(){
     // The MediaPipe graph currently in use. Initialized in viewDidLoad, started in
     // viewWillAppear: and sent video frames on videoQueue.
     MPPGraph* mediapipeGraph;
     PoseTrackingGraphDelegate* poseTrackingGraphDelegate;
+    //// Helps to convert timestamp.
+    MPPTimestampConverter* timestampConverter;
 }
 
 @end
@@ -122,7 +126,7 @@ static const char* kLandmarksOutputStream = "pose_landmarks";
     self.renderer = [[MPPLayerRenderer alloc] init];
     self.renderer.frameScaleMode = MPPFrameScaleModeFillAndCrop;
 
-    self.timestampConverter = [[MPPTimestampConverter alloc] init];
+    self->timestampConverter = [[MPPTimestampConverter alloc] init];
     
     dispatch_queue_attr_t qosAttribute = dispatch_queue_attr_make_with_qos_class(
         DISPATCH_QUEUE_SERIAL, QOS_CLASS_USER_INTERACTIVE, /*relative_priority=*/0);
@@ -196,7 +200,7 @@ static const char* kLandmarksOutputStream = "pose_landmarks";
   [self->mediapipeGraph sendPixelBuffer:imageBuffer
                             intoStream:self.graphInputStream
                             packetType:MPPPacketTypePixelBuffer
-                             timestamp:[self.timestampConverter timestampForMediaTime:timestamp]];
+                             timestamp:[self->timestampConverter timestampForMediaTime:timestamp]];
 }
 
 #pragma mark - MPPGraphDelegate methods