The problem is with your stoploss. Your OrderSend statement should be written as:

OrderSend(Symbol(),OP_BUY,Lots,Ask,3,Ask-StopLoss*Point,Ask+TakeProfit*Point,"TH_Buy",16384 ,0,Green);

Also, for some brokers, it is not possible to use 10pips as takeprofit. You may have to increase it to 15pips.