还是不懂，请帮忙看下我的程序。谢谢各位。

我现在有两个EA程序，分别运行两种货币对，程序中用红色画出来的部分，在两个程序中是完全一样的，我想分别执行两种货币，就是每种货币各开一单，按照他们各自的EA程序操作。

但问题出现了，有时候一种货币连续的开两单，比如说13：00，欧元就连续开两单，这样另外一种货币就不开仓了。我是刚刚在学写EA的，所以，有人建议我管理symbol的数量，小于1就不开这种货币的单。可是我不懂应该加在哪一段。请大家帮忙一下了。十分感谢。

totalopen=OrdersTotal();
if (totalopen<2)
{
if((MacdPPrevious-SignalPPrevious)<0 && diff>dea)
{
ticket=OrderSend(Symbol(),OP_BUY,Lots,ask,3,0,0,"try2 sample",999,0,Green);
if(ticket<0)
{RefreshRates();}
if(ticket>0)
{
if(OrderSelect(ticket,SELECT_BY_TICKET,MODE_TRADES)) Print("BUY order opened : ",OrderOpenPrice());

}

else Print("Error opening BUY order : ",GetLastError());
return(0);
}

if((MacdPPrevious-SignalPPrevious）0 && diff<dea)
{
ticket=OrderSend(Symbol(),OP_SELL,Lots,bid,3,0,0,"try2 sample",999,0,Red);
if(ticket>0)
{
if(OrderSelect(ticket,SELECT_BY_TICKET,MODE_TRADES)) Print("SELL order opened : ",OrderOpenPrice());
}

else Print("Error opening SELL order : ",GetLastError());
return(0);
}
return(0);
}
// it is important to enter the market correctly,
// but it is more important to exit it correctly...

for(cnt=0;cnt<totalopen;cnt++)
{
OrderSelect(cnt, SELECT_BY_POS,MODE_TRADES);
if(OrderType()<=OP_SELL && // check for opened position
OrderSymbol()==Symbol()) // check for symbol
{
if(OrderType()==OP_BUY) // long position is opened
{
if((diffpprevious-deapprevious)<0 && diff<dea )
{
OrderClose(OrderTicket(),OrderLots(),bid,3,Violet);
Print("30mins buy cross",OrderClosePrice());
return(0); // exit
}
if((MacdPPrevious-SignalPPrevious）>0 && diff>dea &&(TimeCurrent()-OrderOpenTime())>300)
{
if( OrderStopLoss()!=NormalizeDouble(open-modifysl*point,digits)&& OrderTakeProfit()!=NormalizeDouble(open+modifytp*point,digits))
}

}
else
{
if(OrderType()==OP_SELL)
{
if((diffpprevious-deapprevious)*(diffprevious-deaprevious)<0 && diff>dea &&(TimeCurrent()-OrderOpenTime())>300)
{
OrderClose(OrderTicket(),OrderLots(),ask,3,Violet);
Print("30mins sell cross",OrderClosePrice());
return(0); // exit
}

if((MacdPPrevious-SignalPPrevious)<0 && diff<dea &&(TimeCurrent()-OrderOpenTime())>300)
{
if( OrderStopLoss()!=NormalizeDouble(open+modifysl*point,digits )

{
OrderModify(OrderTicket(),OrderOpenPrice(),NormalizeDouble(open+modifysl*point,digits),NormalizeDouble(open-modifytp*point,digits),0,Green);
}
}
}

return(0);
} ..........