martingale - checking if position closed at a loss

[EANOOB]

Hi everyone,

I know my question might be a bit stupid to those of you more experienced but I really need help with an issue I have run into.
I am reasonably new to coding, and I have been spending the past 4 hours looking through the forums and google for how to do this and I can't find an answer I can understand or that works for me.
I am trying to make a basic EA using the martingale where I check if the trade closed on the stop loss and if it did then to double the trade volume of the next trade, and if it closed on the take profit to reset the trade volume to 

the original lower setting. 

double TradeVolume = 0.01;     

if(PRICE_OPEN > PRICE_CLOSE){
          TradeVolume = TradeVolume * 2;
          }else if(PRICE_OPEN < PRICE_CLOSE){
          TradeVolume = 0.01;

}

I have added this for buy orders and switched the > and < around for the sell order. 
I'm not sure if PRICE_OPEN and PRICE_CLOSE are the right things to be comparing to find out if the trade was at a loss or profit.
Also, when I run this code in the EA, it only places one trade then stops.

Any help would be greatly appreciated. Sorry for coming across as a total newbie.

[Ahmet Metin Yilmaz]

you have to choose which order's open and close price first

after that you may work with order open price and close price

[EANOOB]

Ahmet Metin Yilmaz:

you have to choose which order's open and close price first

after that you may work with order open price and close price

Thanks for your fast reply,
Would I use orderselect() or select() for that? 

[Ahmet Metin Yilmaz]

in your case,

OrderHistoryTotal() and  OrderSelect()

https://docs.mql4.com/trading/ordershistorytotal

[EANOOB]

Ahmet Metin Yilmaz:

in your case,

OrderHistoryTotal() and  OrderSelect()

https://docs.mql4.com/trading/ordershistorytotal

Thanks so much. I'll give it a try now and update here if I get it working

[Ahmet Metin Yilmaz]

EANOOB:
Thanks so much. I'll give it a try now and update here if I get it working

youre welcome :)

[Dua Yong Rew]

check the order profit and order volume to work with