set lot size

Mar 04, 2015 at 08:04
479 Views
9 Replies
Member Since Sep 04, 2014   25 posts
Mar 04, 2015 at 08:04
Hello, Sorry for my english. I have an Ea that I would like to set lot size as folowing : (account balance * 0.00001). Could someone help me?
luclevesque17@
Member Since Sep 20, 2014   365 posts
Mar 06, 2015 at 03:53 (edited Mar 06, 2015 at 03:56)
Lotsize = AccountBalance()*0.00001;

And I very strongly suggest using AccountEquity() instead...

Member Since Sep 04, 2014   25 posts
Mar 08, 2015 at 07:37
Thank you very much. It works, but it doesn't update when equity changes. Where do I have to put it to update on every trades?
luclevesque17@
Member Since Sep 20, 2014   365 posts
Mar 09, 2015 at 02:15 (edited Mar 09, 2015 at 02:37)
That be in the structure of the code, you'll have to move where you do the calculation. And of course without seeing the source I'd have no idea why it's not updating every tick.

Try this line in a few places till you get the desired result, look for the values to print in the experts tab:

Print ('Ordersize: ', AccountBalance()*0.00001);

If you put that just after you initiate the code it should print constant value changes, then move it around to few places where you think it should be. I don't know where your lotsize declaration is, if it's global you can just put your calculation where it prints ok, if it's not global then you'll have to change your logic to update more often.
Member Since Sep 20, 2014   365 posts
Mar 09, 2015 at 02:18 (edited Mar 09, 2015 at 02:25)
And of course I just used lotsize, what is your parameters name in the OrderSend ?

Look for an OrderSend function in your code, get the name of the third parameter, then go look where you work out that parameter and put that calculation in there.
Renko
forex_trader_211931
Member Since Oct 14, 2014   11 posts
Mar 09, 2015 at 11:04
Print ('Ordersize: ', AccountEquity()*0.00001);

would be better to see constant updated Lot Size.
 
Or if you want it straight on your chart:

string Text='Lot Size: '+DoubleToStr(AccountEquity()*0.00001,2);
Comment(Text);
Renko
forex_trader_211931
Member Since Oct 14, 2014   11 posts
Mar 09, 2015 at 11:04
Oops, use ' instead of ' in the Text definition obviously :)
Renko
forex_trader_211931
Member Since Oct 14, 2014   11 posts
Mar 09, 2015 at 11:04
Grr... so use double quotes instead of single quotes... Dunnow why Fxbook converts them here..
Member Since Sep 04, 2014   25 posts
Mar 09, 2015 at 17:48
Thank you the hand and Renko,
It works now!

I'm a rooky in programing and english is not easy for me. I work hard to debug. Your tips are well appreciate!
luclevesque17@
Member Since Sep 20, 2014   365 posts
Mar 09, 2015 at 23:31
I couldn't code as well, put myself on a course. Only took me the 8 hours the course was long to learn how to code. Worth it if you're going to do fx.
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