Faliure to instantiate game objects

why aren't i getting my game objects instantiated?

 using System.IO;
 using UnityEngine;
 
 public class Marker_creator : MonoBehaviour {
 
     private string points=" ";
     public GameObject Marker;
     private double[] coordinates_DP;
     private string[] coordinates;
     private int number_of_markers;
     private int total_coordinate_number;
     private double parsed;
     private Vector3 marker_position;
     public GameObject marker_clone;
     private int point = 0;
     private int frame = 1;
 
 
     //This script will read static marker data from static_data.txt and create a game object for each marker
 
     // Use this for initialization
     void Awake()
     {
 
         StreamReader reader = new StreamReader(@"C:\Users\chenuka\Documents\FreeBody2.1_Realtime\Assets\static_data.txt");
         
 
 
         if (points != null)
         {
             points = reader.ReadLine();
             coordinates = points.Split('\t'); //split line into individual numbers
             total_coordinate_number = coordinates.Length;
             number_of_markers = total_coordinate_number / 3;
             reader.Close();  //reads one line of static data.txt to get all the markers.
         }
 
         coordinates_DP= new double[total_coordinate_number];
 
         for (int i = 0; i < total_coordinate_number; i++)
         {
             parsed = System.Convert.ToDouble(coordinates[i]);
             coordinates_DP[i] = parsed;
         }
     }
 
    
     // Update is called once per frame 
 
     void Update ()
     {
         if (frame == 1)  //positions markers during the first frame
         {
             for (int i = 0; i < number_of_markers; i++)
             {
                 float x = (float)coordinates_DP[point];
                 float y = (float)coordinates_DP[point + 1];
                 float z = (float)coordinates_DP[point + 2];
                 marker_position = new Vector3(x, y, z);
                 marker_clone = Instantiate(Marker, marker_position, Quaternion.identity) as GameObject;
                 point = point + 3;
                 Destroy(marker_clone, 5);
             }
         }
         frame++;
     }
 }