diff --git a/src/main/java/cactusServer/entities/MovableObject.java b/src/main/java/cactusServer/entities/MovableObject.java
index 565992e..335c124 100644
--- a/src/main/java/cactusServer/entities/MovableObject.java
+++ b/src/main/java/cactusServer/entities/MovableObject.java
@@ -15,7 +15,6 @@
 import net.arnx.jsonic.JSONHint;
 
 public class MovableObject extends Entity3D {
-	private Position3D position;
 	private Velocity3D velocity;
 	private AngularVelocity3D angularVelocity;
 	private Quaternion3D angle;
@@ -44,7 +43,7 @@
 	}
 
 	public Position3D getPosition() {
-		return position;
+		return ((Object3D) (getPlaceable().getBody())).getPosition3D();
 	}
 	
 	@JSONHint(ignore = true)
@@ -72,7 +71,6 @@
 	}
 
 	public void setPosition(Position3D position) {
-		this.position = position;
 		if (placeable != null)
 			((Object3D) (getPlaceable().getBody())).setPosition(position);
 	}
diff --git a/src/main/java/cactusServer/utils/App.java b/src/main/java/cactusServer/utils/App.java
index 00dfd47..5d390e2 100644
--- a/src/main/java/cactusServer/utils/App.java
+++ b/src/main/java/cactusServer/utils/App.java
@@ -36,7 +36,7 @@
 @ApplicationPath("/rest")
 public class App extends ResourceConfig implements Runnable {
 	private ScheduledThreadPoolExecutor task = new ScheduledThreadPoolExecutor(1000);
-	private long lasttime = System.nanoTime();
+	private long lasttime = System.currentTimeMillis();
 	private boolean debugflag = false;
 
 	public App() {
@@ -55,11 +55,10 @@
 
 	@Override
 	public void run() {
-		// System.out.println("�^�X�N�����s");
-		CollisionManager.getInstance().collisionRun(System.nanoTime() - lasttime);
+		CollisionManager.getInstance().collisionRun(System.currentTimeMillis() - lasttime);
 		removeDeadBullets();
 		removeInactivePlayers();
-		lasttime = System.nanoTime();
+		lasttime = System.currentTimeMillis();
 	}
 
 	public void start(int interval) {