lift pink balls to another level

Project/Assets/ML-Agents/Examples/Reacher/Prefabs/Agent.prefab

   m_EditorClassIdentifier: 
   m_BrainParameters:
     VectorObservationSize: 33
-    NumStackedVectorObservations: 3
+    NumStackedVectorObservations: 1
-  m_Model: {fileID: 11400000, guid: d7bdb6a78154f4cf99437d67e4a569a8, type: 3}
+  m_Model: {fileID: 11400000, guid: 66e38dc39b8474661869e59a21ed2837, type: 3}
   m_InferenceDevice: 0
   m_BehaviorType: 0
   m_BehaviorName: Reacher

Project/Assets/ML-Agents/Examples/Reacher/Prefabs/NewAgent.prefab

   m_EditorClassIdentifier: 
   m_BrainParameters:
     VectorObservationSize: 64
-    NumStackedVectorObservations: 3
+    NumStackedVectorObservations: 1
-  m_Model: {fileID: 11400000, guid: e12acd64209f9468c899b9708b2702c3, type: 3}
+  m_Model: {fileID: 11400000, guid: 79166d8db14004ba0aa1ffdce3f62667, type: 3}
   m_InferenceDevice: 0
   m_BehaviorType: 0
   m_BehaviorName: Reacher

Project/Assets/ML-Agents/Examples/Reacher/Scripts/NewReacherAgent.cs

             var radians = m_BallDegrees[i] * Mathf.PI / 180f;
             var ballX = 8f * Mathf.Cos(radians);
             var ballY = 8f * Mathf.Sin(radians);
-            var ballZ = m_Deviation * Mathf.Cos(m_DeviationFreq * radians);
+            // var ballZ = m_Deviation * Mathf.Cos(m_DeviationFreq * radians);
+            var ballZ = 10f;
             m_balls[i].transform.position = new Vector3(ballY, ballZ, ballX) + transform.position;
         }