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Forex Software → Forex Strategy Builder Professional → Small bug in the percent entry units
Hello
I think I found a small bug.
If you want to but an asset valued 8000 USD with a 50 times leverage you need 160 euros. If you have 1000 USD in your account, this corresponds to 16% of your account.
However, even if you insert 0,01% as entry "unit for trading amount", FSB pro will still buy 1 unit of the asset, even if it is clearly insufficient.
Cheers
Nuno
If you have initial account of $1000 and 1/50 leverage, and you want to buy $8000, you'll need $160 Free Margin (not 160 Eur). It is exactly 16% as you said.
We can test it easily on USDCHF market. The following screens shows that FSB Pro acts exactly as expected.
......
If you set 0.01% Entry units, this corresponds to 0.01% of the account = 0.01 * 1000 / 100 = 0.1$ Margin.
$0.1 covers $5 of the asset you want to buy. However, FSB Pro cannot buy less than 0.01 of the LotSize set in Control Panel => Symbols. If you have lot size of 10000, the minimum quantity FSB Pro will buy is 0.01 * 10000 = 100 units.
Can you explain why you think that there is a bug here?
In my opinion FSB should not buy any assets if the percentage of your equity you are allocating is not enough, as per the example I provided.
I was thinking of DAX, a cfd priced at more than 8000 USD per unit. Min lot size is 1 unit as well. If I allocate 0,01 percent as entry units it would be enough to buy 5 USD of the asset. As 5 is lower than 8000, in my humble opinion FSB should buy zero units, not one 
If you connect FSB Pro to your broker, you'll see that it provides three values: Minimum Lots, Lot Step and Maximum Lots. FSB Pro normalizes the trading amount using these values on Trading mode. On Backtesting mode, FSB Pro uses Minimum Lots = 0.01, Lot Step = 0.01 and Maximum Lots as per value of the current strategy. All trade amounts correspond to these parameters.
I was thinking of DAX, a cfd priced at more than 8000 USD per unit. Min lot size is 1 unit as well. If I allocate 0,01 percent as entry units it would be enough to buy 5 USD of the asset. As 5 is lower than 8000, in my humble opinion FSB should buy zero units, not one smile
Yea.. it sounds strange However this is a specific case.
FSB Pro normalizes the values to prevent execution errors on trading.
Hmm, I should stop spamming the thread. A moderator can decide to ban me
It is very easy to make FSB canceling orders when the requested trade amount is lower than Min Lots.
However, this will be a rather unexpected behavior since this logic is in the programs for many years.
I think is better to leave it as it is now.
I finally decided that Nuno is right. It's more logical to cancel entry orders when the requested trade amount is lower than the Symbol's Min lots.
In order improve the compatibility, I added two parameters in The Control Panel => Symbols page: Min lots and Lot step.
I'll publish an update this evening.
Wonderful. It might protect some inexperienced traders too )
Cheers,
Nuno
Forex Software → Forex Strategy Builder Professional → Small bug in the percent entry units
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