Why-I-have-Position-Profit-always-positive

Why does this code generate only:

--SPY--
index: 5010, profit: -6,9300000000008595
index: 5011, profit: -6,9300000000008595
index: 5012, profit: -6,9300000000008595
index: 5013, profit: -6,9300000000008595
index: 5014, profit: -6,9300000000008595
index: 5015, profit: -6,9300000000008595
index: 5016, profit: -6,9300000000008595
index: 5017, profit: -6,9300000000008595
index: 5018, profit: -6,9300000000008595
index: 5019, profit: -6,9300000000008595
index: 5020, profit: -6,9300000000008595
index: 5021, profit: -6,9300000000008595
index: 5022, profit: -6,9300000000008595
index: 5023, profit: -6,9300000000008595
index: 5024, profit: -6,9300000000008595
index: 5025, profit: -6,9300000000008595
index: 5026, profit: -6,9300000000008595
index: 5027, profit: -6,9300000000008595
index: 5028, profit: -6,9300000000008595

CODE:
namespace WealthScript1 
{
    public class MyStrategy : UserStrategyBase
    {      
        public override void Initialize(BarHistory bars)
        {   
        }

        public override void Execute(BarHistory bars, int idx)
      {
         if (idx < 125)
            return;

         {
            if (bars.Close[idx] > bars.High[idx - 1]) 
               PlaceTrade(bars, TransactionType.Buy, OrderType.Market);
            }

         foreach (Position long_pos in OpenPositions)
         if (long_pos != null & 
            long_pos.PositionType == PositionType.Long)
            {
               if (long_pos.Profit < 0)
                  WriteToDebugLog(String.Format("index: {0}, profit: {1}", idx, long_pos.Profit));
            }

         foreach (Position long_pos in OpenPositions)
            if (long_pos != null & long_pos.PositionType == PositionType.Long)
            {
               if (long_pos.EntryBar < idx - 25)
               {
                  ClosePosition(long_pos, OrderType.Market);
               }
            }
           
        }
    }
}