For instance, suppose you want a strategy that performs well on both EURUSD and GBPUSD—specifically, one with a balance line stability score of 80 for both. Currently, when using multi-market analysis based on the EURUSD pair, the system might output a strategy that achieves a score of 80 on EURUSD but fails to do so on GBPUSD (seemingly because it prioritizes raw profit on the latter). This issue could likely be resolved by adding a "Use Common Acceptance Criteria for All Pairs" checkbox.

In this video, you will see:
- How to build a trading bot from scratch with Expert Advisor Studio using historical data, entry rules, take profit, stop loss, and AI as a supporting tool
- How to test strategies with Walk Forward, Monte Carlo, multi-market validation, and backtesting to avoid over-optimized EAs
- How to add fixed-grid recovery, optimize it carefully, and adapt the final EA for prop firms, funded accounts, or Darwinex Zero

I'm very happy that can finally share some screenshots of my work.
I'm developing a new backtesting application which will succeed FSB and EA Studio.

It is Strategy Builder Professional

It will be like EA Studio on steroids with the capability of FSB Pro.

The Builder part of the program - Editor, Optimizer, monte Carlo, Multi-market, Report, plus Data Hirizon, Data Import, Data Export, plus Collection will be free for everyone. It will include free backtesting and export of unlimited number of Expert Advisors.

A "Professional" license will be needed for the high-tech parts like Generator, Automated workflow, Portfolio, and some position scaling features like Martingale, Adding / Reducing, Grid...

I'm already working on Strategy Builder Professional for two years. Especially the last 20 days I worked 20 hours per day and achieved amassing results.

SBP = EA Studio

SBP provides tens of Strategy Features instead of Strategy Properties

Like Risk percent

I'm porting the FSB Pro backtester to the browser

It will work beter on smaller screens. Ind will have Sai - the Strategy AI

The Sai functionality is 1/3rd of the SBP code. It will be able to analyze the current page, the strategy, and the backtest results.

Sai can read the technical documentation and can answer specific questions for the program. I spent a lot of time generating special AI instructions from SBP screens and the source code, so the AI models to be helpful.

Sai can control SBP

> Set stop loss of 400 USD

> Set meaningful strategy protections

Which protections do you want to add? Common choices are:
- Stop Loss (limit loss per position) — can also enable a trailing stop
- Take Profit (profit target)
- Break-even (move stop to entry once the position is in profit)
- Max Spread Protection (skip entries when spread is too wide)

> You decide

I'll start posting updates on SBP on daily basis.

You may take a look at the current state of the program at: https://sbp.forexsb.com/

Have fun!

Below is a screenshot of an EA's stats. I'm trying to make sense of the numbers circled in red. In particular:

Q1) How can the "Max Daily Loss" be larger than the "Max Drawdown"?

Thanks!

The EA Studio "Data Import" tab states that we can upload "up to 200,000 bars" but if I attempt to upload more than that it seems to work fine. Does loading more than 200,000 bars actually work fine, or will it cause problems later?

Thanks!

I want to use Randomize Indicator Parameter Only in Monte Carlo, is this setting correct?

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; Monte Carlo                      ;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

enable_monte_carlo            = true
count_of_tests                =  500
valid_tests_percent           =  80

spread_max                    =  0

; Execution problems
slippage_max                  =   0
skip_entries_percent          =   0
skip_exits_percent            =   0
rand_close_percent            =   0

; Strategy variations
ind_params_change_probability = 100
ind_params_max_change_percent =  20
ind_params_min_delta_steps    =   5
rand_first_bar_percent        =   0

Sometimes I got request timeout when importing slightly large data, could you please increase timeout limit a little bit for importing process?

My upload speed is not very fast

Does anyone know why I'm getting a NaN start date when I import data (see screenshot below).

Data file attached if you want to try it yourself.

Thanks!

I am running EA Studio inside the Chrome browser on Windows 11. If I set an optimisation running then switch to another tab in the browser, or switch to another virtual desktop (which I use a lot so I can multi-task several projects at once) the optimisation in EA Studio pauses indefinitely. It remains paused forever, until I return to the desktop with Chrome on it and select the EA Studio tab.

Is this a known issue? Is there any way to get EA Studio to keep running regardless of the active browser tab or active desktop?

Thanks!

So I asked ChatGPT to create an EA for me to execute in MT5 to do exactly that. After much back & forth (about ten hours and 73 versions so far) this is what we came up with:

These charts are for gold (XAUUSD) on IC Markets, and are based on the spread information that's embedded in the M15 OHLC data. As you can see, the spreads are all integers. The blue numbers are the 50th percentile numbers ("P50", which is the Median). Orange are the 90th percentile ("P90") and Green are the 95th percentile ("P95").

For most of 2021 and 2022 the Median is zero, indicating that a lot of the spreads are claimed to be negligible. That seems unlikely, but might just be rounding-down. However, I have seen speculation online that the spreads embedded in OHLC data are actually the low of the spread for that candle, not the mean or median, which is why I wrote "MT5 Minimum Bar Spread" at the top of the chart.

Since it's unclear whether we can trust the spreads embedded in the OHLC data, I thought it might be interesting to recalculate these charts based on tick data. Unfortunately IC Markets only provide a few months of tick data so the time period will be limited, but the comparison should be interesting. I'll send that in another message.

For now, attached is the code of the EA that produced these charts. If you want to make changes just upload the code to ChatGPT and ask ChatGPT to do it for you. There are lots of input options for this EA. Check the code for comments that might help you figure out what each one does. Or ask me.

Another question from me (sorry). I have exported an EA as MT5 (actually it's an "EA Plus" version so it includes the grid options). The EA seems to work great, except that the Daily Protections and Account Protections don't appear to do anything in the MT5 backtests. When I set them to something tiny (which should cut the profit down to near-zero) the profit is unchanged. Is that a known problem or am I doing something wrong?

Thanks!

I'm running an optimisation in EA Studio. It finds a better strategy and the "Accept" button turns green. But when I press the Accept button nothing happens (except that the button goes from light green to dark green). The new strategy is not accepted and it is not saved to the collection. This only happens on rare occasions, but in those circumstances when it does happen there appears to be nothing I can do to fix it.

Has anyone else had this problem? Why does it happen? Is there a solution or a work-around?

Thanks!

This might have been asked before but I couldn't find any info when I searched the forum. In the "Collection" tab I see the balance chart on the left of the image above (Premium data, XAUUSD, M5, 200k bars). But when I open that EA in the Editor ("Strategy" tab) I see the balance chart on the right of the image above. Why did it change?

I've attached the EA in case you want to test it yourself.

Thanks!

Quick question: In EA Studio we can optimise by "Balance Line" and "System Quality"... How do we do that in Express Generator? The only options mentioned for optimize_by in the gen.settings.ini file are:

NetBalance, Profit, ProfitFactor, ReturnToDrawdown, RSquared, Stagnation, WinLossRatio

Thanks!