如何描绘均线转向和其它问题

本人新手 想写用均线转向作为进出信号
但均线转向不会描述。

double m1,ticket1;
m1=iMA(NULL,5,21,0,MODE_SMA,PRICE_CLOSE,0);
//用5分钟周期的21均线来研判
//假如以21均线比前一个期大于5做多做多信号
if ( m1>=m1+5)
{ ticket1=OrderSend(Symbol(),OP_BUY,0.1,Ask,5,Bid-105*Point,0,"My order #1",11,0,Green);}
//这样算正确吗？请前辈帮忙看看 谢谢
//另外，TS想用以当前K线逆序第21个K线的收盘价 怎么表达？十分感谢啊。

 

如果问题解决 我将所有代码公布出来供大家测试 说到做到

 

double m1,m2,ticket1;
m1=iMA(NULL,5,21,0,MODE_SMA,PRICE_CLOSE,0);
m2=iMA(NULL,5,21,0,MODE_SMA,PRICE_CLOSE,1);
//用5分钟周期的21均线来研判
//假如以21均线比前一个期大于5做多做多信号
if ( m1>=m2+5)
{ ticket1=OrderSend(Symbol(),OP_BUY,0.1,Ask,5,Bid-105*Point,0,"My order #1",11,0,Green);}

有一个疑问："21均线比前一个期大于5"有可能吗？

 

谢谢前辈指点 我也在考虑这个5是不是有问题 是否要加一个时间限制 比如从现在开始逆序第三个BAR的收盘价大于5 但这个跟我主贴的第二个问题一样 我还不会表述 前辈能否再帮忙表述一下 十分感谢了

 

逆序第三个BAR的值 是这样表达吗？新手上路，
m2=iMA(NULL,5,21,0,MODE_SMA,PRICE_CLOSE,3);
谢谢

 

帮忙看看不能开单的原因

我刚学MQL
写了个简单的均线信号系统
但不知为何 检测时不能开单 请大侠们帮忙看看问题出在哪里？自己看了半天，没想明白
bool UseTimeLimit=true;
int StartHour=0; // Start trades after time
int StopHour=24; // Stop trading after time

extern double TradeSizePercent=5; //
extern double Lots=0.1; // standard lot size.

extern int maxLots =3;
//+---------------------------------------------------+
//+---------------------------------------------------+
extern double SL = 105;
extern bool TP=FALSE;


//+------------------------------------------------------------------+
//| expert initialization function |
//+------------------------------------------------------------------+
int init()
{
//----

//----
return(0);
}
//+------------------------------------------------------------------+
//| expert deinitialization function |
//+------------------------------------------------------------------+
int deinit()
{
//----

//----
return(0);
}
//+------------------------------------------------------------------+
//| expert start function |
//+------------------------------------------------------------------+
int start()
{
double m1,m2,m3,m4,ticket1,ticket2;
int total,cnt,Buy=0, Sell=0;
m1=iMA(NULL,5,21,0,MODE_SMA,PRICE_CLOSE,0);
m2=iMA(NULL,5,55,0,MODE_SMA,PRICE_CLOSE,3);
m3=iMA(NULL,5,21,0,MODE_SMA,PRICE_CLOSE,0);
m4=iMA(NULL,5,55,0,MODE_SMA,PRICE_CLOSE,3);
total=OrdersTotal();
if(AccountFreeMargin()<(3*Lots))
{
Print("We have no money. Free Margin = ", AccountFreeMargin());
return(0);
}
//open
//buy
if ( m1>=m2+0.1)
{ ticket1=OrderSend(Symbol(),OP_BUY,0.1,Ask,5,Bid-105*Point,0,"My order #1",11,0,Green); Buy++; }
if (m3>=m4+0.1)
{ticket2=OrderSend(Symbol(),OP_BUY,0.1,Ask,5,Bid-105*Point,0,"My order #2",12,0,0); Buy++;}

//sell
if (m1<=m2-0.1)
{ ticket1=OrderSend(Symbol(),OP_SELL,0.1,Bid,5,Ask+105*Point,0,"My order #1",22,0,Red); Sell++;}
if (m3<=m4-0.1)
{ticket2=OrderSend(Symbol(),OP_SELL,0.1,Bid,5,Ask+105*Point,0,"My order #2",23,0,0); Sell++;}

//close
for(cnt=total-1;cnt>=0;cnt--)
//close buy
{
OrderSelect(cnt, SELECT_BY_POS, MODE_TRADES);
if(OrderType()==OP_BUY)
{
if(m1<m2+0.1)
{OrderClose(OrderTicket(),OrderLots(),Bid,3,Violet); Buy--;}
if(m3<m4+0.1)
{OrderClose(OrderTicket(),OrderLots(),Bid,3,Violet); Buy--;}
}
//close sell
if(OrderType()==OP_SELL)
{
if(m1>m2+0.1)
{OrderClose(OrderTicket(),OrderLots(),Ask,3,Violet); Sell--;}
if(m3<m4+0.1)
{OrderClose(OrderTicket(),OrderLots(),Ask,3,Violet); Sell--;}
}
}
//----

//----
return(0);
}
//+------------------------------------------------------------------+