problem in taking order

hello all

i am willing for some help to solve this issue.

i would like to take an order every  x pips  if the market continue in the same way of the first order

this is the code but it doesn't work with me , any help please 

double Xpips=50;

 if(Ask-Xpips*Point>=lastorderopenprice(OP_BUY)){ BUY=TRUE ;}
 
 if(Bid+Xpips*Point<=lastorderopenprice(OP_SELL)){ SELL=TRUE ;}

double lastorderopenprice(int type)

{
double lototo;
for(int i=0;i<=OrdersTotal();i++)
{
if(OrderSelect(i,SELECT_BY_POS,MODE_TRADES))
if(OrderSymbol()==Symbol() && OrderMagicNumber()==Magic&&OrderType()==type){
lototo=OrderOpenPrice();
}
}
return(lototo);
}