Possible to trade different currency than the one EA is attached to?

timbo · #1 (**permalink**) 05-15-2006, 11:49 AM

Hi guys,

Wondering if anyone can help me out - I'm trying to write an EA that will be attached to the EURUSD chart, but want it occasionally to place a USDCHF trade as well as the EURUSD ones. Is this possible? I tried the following code:

OrderSend("USDCHF",OP_BUY,Lots,Ask,3,StopLoss*Poin t,TakeProfit*Point,"UC",55555,0,Green)

But I kept getting the message "unknown symbol name USDCHF for OrderSend function". Is this because the EA is attached to the EURUSD chart? And is there any way to tell the EA to buy a different currency (and then later to close it)?

Any suggestions would be very appreciated! (Oh, and does anyone know of an EA that does this? I find it helpful to look at the code of working EA's when I'm struggling with a problem.)

Tim

codersguru · #2 (**permalink**) 05-15-2006, 12:14 PM

Quote:

Originally Posted by timbo

Hi guys,

Wondering if anyone can help me out - I'm trying to write an EA that will be attached to the EURUSD chart, but want it occasionally to place a USDCHF trade as well as the EURUSD ones. Is this possible? I tried the following code:

OrderSend("USDCHF",OP_BUY,Lots,Ask,3,StopLoss*Poin t,TakeProfit*Point,"UC",55555,0,Green)

But I kept getting the message "unknown symbol name USDCHF for OrderSend function". Is this because the EA is attached to the EURUSD chart? And is there any way to tell the EA to buy a different currency (and then later to close it)?

Any suggestions would be very appreciated! (Oh, and does anyone know of an EA that does this? I find it helpful to look at the code of working EA's when I'm struggling with a problem.)

Tim

Tim,

I'm writing right now an article about this issue, please check it at:

http://www.metatrader.info/node/124

timbo · #3 (**permalink**) 05-15-2006, 12:44 PM

Quote:

Originally Posted by codersguru

Tim,

I'm writing right now an article about this issue, please check it at:

http://www.metatrader.info/node/124

Thanks CG! You're such a helpful guy..... I've really appreciated all the hard work you put into those Metatrader lessons, and they have been a great help to me!

I look forward to reading the article when it's ready

Tim

timbo · #4 (**permalink**) 06-03-2006, 11:20 AM

Hi CG.... it was very interesting reading your tutorial, but I still don't understand exactly how to tell Metatrader to buy or sell a different currency from the one the EA is attached to. Would it be possible for you to post an example of some code that does this? For example, when the EA is attached to EUR/USD, how do I tell it to buy USD/CHF at the current Ask price?

Originally I tried:

OrderSend("USDCHF", OP_BUY, Lots, Ask, 3, StopLoss*Point, TakeProfit*Point, "UC", 55555, 0, Green)

which didn't work. Is this because I didn't use the ibars Function first, or have I got the code completely wrong?

Can you, or anyone else help with this?

Tim

codersguru · #5 (**permalink**) 06-03-2006, 05:11 PM

Quote:

Originally Posted by timbo

Hi CG.... it was very interesting reading your tutorial, but I still don't understand exactly how to tell Metatrader to buy or sell a different currency from the one the EA is attached to. Would it be possible for you to post an example of some code that does this? For example, when the EA is attached to EUR/USD, how do I tell it to buy USD/CHF at the current Ask price?

Originally I tried:

OrderSend("USDCHF", OP_BUY, Lots, Ask, 3, StopLoss*Point, TakeProfit*Point, "UC", 55555, 0, Green)

which didn't work. Is this because I didn't use the ibars Function first, or have I got the code completely wrong?

Can you, or anyone else help with this?

Tim

Hi Tim,

I think you are in a hurry and can not wait for the part 2 of the article, So take the temporarily answer:

To open an "USDCHF" (or any another pair) for an EA that hosted on "EURUSD" chart (or any another pair) you have to use code like this:

PHP Code:


			
if(Buy==true) //buy conditions have been met
      {
         RefreshRates();
         OrderSend("USDCHF",OP_BUY,Lots,MarketInfo("USDCHF",MODE_ASK),Slippage,MarketInfo("USDCHF",MODE_ASK)-StopLoss*Point,MarketInfo("USDCHF",MODE_ASK)+TakeProfit*Point,ExpertComment,MagicNumber,0,Green);
        }
      if(Sell==true) //sellconditions have been met
      {
         RefreshRates();
         OrderSend"USDCHF",OP_SELL,Lots,MarketInfo("USDCHF",MODE_BID),Slippage,MarketInfo("USDCHF",MODE_BID)+StopLoss*Point,MarketInfo("USDCHF",MODE_BID)-TakeProfit*Point,ExpertComment,MagicNumber,0,Red);
         }

In the part 2 of the article you'll know what does the above code mean!

timbo · #6 (**permalink**) 06-04-2006, 11:57 AM

Quote:

Originally Posted by codersguru

In the part 2 of the article you'll know what does the above code mean!

Ooh.... thanks CG..... looking forward to it, and I'll try to be more patient!!

timbo · #7 (**permalink**) 06-04-2006, 12:54 PM

Hey CG..... I just found your article on Hedging which helped with my original question(and helped me understand the code snippets below), but when I try to backtest your Hedging.mq4 EA I get an error message saying "invalid price for OrderSend function" when it tries to place the USDCHF order. Do you know why this is happening?

codersguru · #8 (**permalink**) 06-05-2006, 12:46 PM

Quote:

Originally Posted by timbo

Hey CG..... I just found your article on Hedging which helped with my original question(and helped me understand the code snippets below), but when I try to backtest your Hedging.mq4 EA I get an error message saying "invalid price for OrderSend function" when it tries to place the USDCHF order. Do you know why this is happening?

It's a limitation in MT BackTesting:

Trading is permitted for the symbol under test only, no portfolio testing Attempts to trade using another symbol will return error

Please review this article:
http://articles.mql4.com/72

So, this kind of program have to forward tesing only!

timbo · #9 (**permalink**) 06-06-2006, 11:55 AM

Thanks again for your help CG... the Hedging article really helped me understand the concept of instructing the EA to buy/sell other currencies!!

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