A couple questions from BugReport

2. I think that you have the same number of orders for sale when you checked.

Hi Rosh

This guy probably forgot to mention that this error only happens in tester.

The problem, I think, is that AccountFreeMargin, AccountFreeMarginCheck and MarketInfo(Symbol(), MODE_MARGINREQUIRED) use the current (today's!) rates for their calculations, which is wrong. Please see for yourself - I ran my expert a few minutes ago (see picture). As you can see these functions caculate the free margin amount, based on the real-time Bid/Ask values, which is wrong. When running in the tester they must use the simulated values for the tested period:

4x4ever , As I know You can to read Russian. I recommend to read through this article Азбука торговли валютами
In google's translation - http://translate.google.com/translate?u=http%3A%2F%2Farticles.mql4.com%2Fru%2F304&langpair=ru%7Cen&hl=ru&ie=UTF-8&oe=UTF-8&prev=%2Flanguage_tools

//+------------------------------------------------------------------+
//|                                        CheckAccountFunctions.mq4 |
//|                      Copyright © 2007, MetaQuotes Software Corp. |
//|                                        https://www.metaquotes.net/ |
//+------------------------------------------------------------------+
#property copyright "Copyright © 2007, MetaQuotes Software Corp."
#property link      "https://www.metaquotes.net/"
 
//+------------------------------------------------------------------+
//| script program start function                                    |
//+------------------------------------------------------------------+
int start()
  {
//----
   string MarginLevel;
   string CommentString=StringConcatenate("Account Number = ",AccountNumber(),"n");
   CommentString=StringConcatenate(CommentString,"AccountCurrency=",AccountCurrency(),"n");
   CommentString=StringConcatenate(CommentString,"AccountCompany=",AccountCompany(),"n");
   CommentString=StringConcatenate(CommentString,"AccountName=",AccountName(),"n");
   CommentString=StringConcatenate(CommentString,"AccountServer=",AccountServer(),"n");
   CommentString=StringConcatenate(CommentString,"AccountStopoutLevel=",AccountStopoutLevel(),"n");
   CommentString=StringConcatenate(CommentString,"AccountStopoutMode=",AccountStopoutMode(),"n");
   CommentString=StringConcatenate(CommentString,"AccountBalance()=",AccountBalance(),"n");
   CommentString=StringConcatenate(CommentString,"AccountMargin=",AccountMargin(),"n");
   CommentString=StringConcatenate(CommentString,"AccountEquity=",AccountEquity(),"n");
   
   if (AccountMargin()>0) MarginLevel=StringConcatenate("MarginLevel=",DoubleToStr(AccountEquity()/AccountMargin()*100,2),"% ");
   else MarginLevel="MarginLevel=N/A";
 
   CommentString=StringConcatenate(CommentString,MarginLevel);
   Comment(CommentString);
//----
   return(0);
  }
//+------------------------------------------------------------------+

This script helps to explain Account... functions .
Drag & Drop it on a chart with opened orders.

Another question from beginner on MQL4

program=MetaTrader
type=0
version=4.00

when you have 40 objects & want to delete them one by one with this instruction, it cannot find the object.

         int    obj_total=ObjectsTotal();
         string name;
 
         for(int f=0;f<obj_total;f++)
         {
         name=ObjectName(f);
            Print(" name ",name, " f ",f);
            ObjectDelete(name);
            int err=GetLastError();
            if(err!=0)
            {
            Print("error(",err,"): ",ErrorDescription(err));
            }
         }

Please inform me if this is really a bug
Thank You

It is an example will work correctly if to change the order of detour of objects in a cycle from the maximal index to zero.

 
         int    obj_total=ObjectsTotal();
         string name;
 
         for(int f=obj_total-1;f>=0;f--)
         {
         name=ObjectName(f);
            Print(" name ",name, " f ",f);
            ObjectDelete(name);
            int err=GetLastError();
            if(err!=0)
            {
            Print("error(",err,"): ",ErrorDescription(err));
            }
         }

Pay attention for(int f=obj_total-1;f>=0;f--)

I added a several arrows to picture for more complete explain.

Hi,

What happen to this code? I have a working EA but when I insert the following code, my EA will not opening any position.

double MarginLevel;

MarginLevel=(AccountEquity()/(AccountMargin())*100);

Any idea?

You can check AccountMargin() for zero value before divding. For example:

double MarginLevel;
 
if (AccountMargin()>0) MarginLevel=(AccountEquity()/(AccountMargin())*100);
else MarginLevel = 100; // you can write another number great than zero.

Dividing by zero will stop an EA.

Thanks. Its work fine. However, I tailor to my own EA and test it on real account and it doing well. Do you or anyone here any comment on my code? I willing to accept any comment.

if (AccountMargin()>AccountBalance()*0.30) MarginLevel=(AccountEquity()/(AccountMargin())*100);
else MarginLevel=180;
if (MarginLevel<180) EnableTrading=false;

For EnableTrading, I inserted it on open sell/buy as the following:-

//Declaration ---

bool EnableTrading=true;

//--Open Sell / Buy

if (OpenBuy && EnableTrading)
{
//------------
// Open Position Code Here
//------------
}

The main purpose of this code is to control your account from burst. However, if you feel that 180% of Margin Level is risky, you can set it on your own preference.

The coder/trader need to know what is the setback of the code when embededd into your EA. As far I noticed, you have to wait for the signal to recover maybe in a few days if your are using M30, or maybe several hours if you are using M1. However, not all EA can accept M1.

Note: This code is partial of account security.