C#

// User defined variables (add any user defined variables below)
       private string path = Cbi.Core.UserDataDir.ToString() + "PIn.txt";
       private int[] levels;
       private int count = 0;
       private string readText = "";


       <big>int num = 4991;</big>
       <big>private int tmp, res = 0;</big>
       private int? diff = null;

       #endregion

       /// <summary>
       /// This method is used to configure the indicator and is called once before any bar data is loaded.
       /// </summary>
       protected override void Initialize()
       {
           CalculateOnBarClose = true;
           Overlay         = true;
           PriceTypeSupported  = false;
       levels              = new int[1000];
       }

       /// <summary>
       /// Called on each bar update event (incoming tick)
       /// </summary>
       protected override void OnBarUpdate()
       {
           // Use this method for calculating your indicator values. Assign a value to each
           // plot below by replacing 'Close[0]' with your own formula.

           readText = File.ReadAllText("C:\\PIn.txt");

           string [] split = readText.Split(new Char [] {';'});
               foreach (string s in split)
               {
                   count++;
                   tmp = int.Parse(s);
                   levels[count] = tmp;

                   if (tmp > <big>num</big>)
                   {
                       if(diff == null)
                           diff = <big>num</big>;
                       if ((tmp - <big>num</big>) < diff)
                       {
                           res = tmp;
                           diff = tmp - <big>num</big>;
                       }
                   }
               }
               Print(res);
       }