CheckMoneyForTrade function not working on GOLD

[Raphael Schwietering]

Hi,

i have a question.

I have to do this 

If a check shows that there are insufficient funds to perform a trade operation, it is necessary to output an error message to the log instead of calling the OrderSend() function.

So i use that code from here https://www.mql5.com/en/articles/2555#not_enough_money

bool CheckMoneyForTrade(string symb, double lots,int type)
  {
   double free_margin=AccountFreeMarginCheck(symb,type, lots);
   //-- if there is not enough money
   if(free_margin<0)
     {
      string oper=(type==OP_BUY)? "Buy":"Sell";
      Print("Not enough money for ", oper," ",lots, " ", symb, " Error code=",GetLastError());
      return(false);
     }
   //--- checking successful
   return(true);
  }

Than i call the function before OrderSend

      if (!CheckMoneyForTrade(_Symbol,lots,type)) return;//Check money for trade

so it is working well with forex symbols.

But when i use Gold or indices than it isnt working.

whats wrong here?? can someone help 

[Konstantin Nikitin]

Error Codes

bool CheckMoneyForTrade(string symb, double lots,int type)
  {
   if( AccountInfoDouble(ACCOUNT_FREEMARGIN) < 0 )return(false);
   double free_margin=AccountFreeMarginCheck(symb,type, lots);
   //-- if there is not enough money
   if(free_margin<0)
     {
      string oper=(type==OP_BUY)? "Buy":"Sell";
      Print("Not enough money for ", oper," ",lots, " ", symb, " Error code=",GetLastError());
      return(false);
     }
   //--- checking successful
   return(true);
  }

Sometimes without checking the balance. Returns this error.

[Raphael Schwietering]

bool CheckMoneyForTrade(string symb, double lots,int type)
  {
   if( AccountInfoDouble(ACCOUNT_FREEMARGIN) < 0 )(false);    
   double free_margin=AccountFreeMarginCheck(symb,type, lots);
   //-- if there is not enough money
   if(free_margin<0)
     {
      string oper=(type==OP_BUY)? "Buy":"Sell";
      Print("Not enough money for ", oper," ",lots, " ", symb, " Error code=",GetLastError());
      return(false);
     }
   //--- checking successful
   return(true);
  }

Whats ACCOUNT_FREEMARGIN?

Whats with this (false)

after compile it says:

expression has no effect

[Konstantin Nikitin]

Raphael Schwietering :

Whats ACCOUNT_FREEMARGIN ?

Whats with this (false)

after compile it says:

expression has no effect

Has corrected. I skipped return =)

[Raphael Schwietering]

Konstantin Nikitin:

Has corrected. I skipped return =)

if( AccountInfoDouble(ACCOUNT_MARGIN_FREE) < 0 )return(false); 

change it to this.but not working. also same as in my picture

[Konstantin Nikitin]

Raphael Schwietering :

if( AccountInfoDouble( ACCOUNT_MARGIN_FREE ) < 0 )return(false); 

change it to this.but not working. also same as in my picture

ERR_NOT_ENOUGH_MONEY

134

Not enough money.

Most likely still somewhere it is necessary to search for the reason.

[Raphael Schwietering]

Konstantin Nikitin:
Most likely still somewhere it is necessary to search for the reason.

but why it works on forex pairs and not on indices or metals

[Raphael Schwietering]

how did you guys do those checks?