Trailing stop from hell, please help my trailing stop trails but doesn't stop loss

[Sechene.9604]

Guys i finally made a robot that buys whenever a bullish candle open but now the problem is my trailing stop, for example the robot place a buy order and i'm trailing in profit but when the market starts going against my direction the trailing stop doesn't close the locked profit ending up in a loss trade, so please help anyone

here is the code guys, please see what you can find mql5

//Create an instance of CTrade
#include<Trade\Trade.mqh>
CTrade trade;
//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
void OnTick()
  {
   double Ask=NormalizeDouble(SymbolInfoDouble(_Symbol,SYMBOL_ASK),_Digits);

   if(PositionsTotal()==0)
      trade.Buy(0.10,NULL,Ask,(Ask-1000*_Point),(Ask+20*_Point),NULL);

   CheckTrailingStop(Ask);
  }
//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
void CheckTrailingStop(double Ask)
  {
   double SL=NormalizeDouble(Ask-150*_Point,_Digits);

   for(int i=PositionsTotal()-1; i>=0; i--)
     {
      string symbol=PositionGetSymbol(i);
      if(_Symbol==symbol)
        {
         ulong PositionTicket=PositionGetInteger(POSITION_TICKET);
         double CurrentStopLoss=PositionGetDouble(POSITION_SL);

         if(CurrentStopLoss<SL)
            trade.PositionModify(PositionTicket,(CurrentStopLoss+10*_Point),0);
        }
     }
  }
//+------------------------------------------------------------------+