Hello Laurent,

What exactly doesn't work means?

- They do not compile
- You receive an error during the backtest
- You see a message "The expert needs xxx bars to start"
- The backtest passes without errors, but there are no deals
- There are deals but they do not match the FSB Prop test

Please post more info and we will try to help.

2020.01.31 00:01:50.770    Tester    EURUSD: preliminary downloading of history ticks started, it may take quite a long time
2020.01.31 00:01:50.770    Tester    EURUSD: preliminary downloading of history ticks completed
2020.01.31 00:01:50.770    Tester    EURUSD: ticks data begins from 2019.01.02 00:00
2020.01.31 00:01:50.794    Core 1    agent process started on 127.0.0.1:3000
2020.01.31 00:01:50.794    Core 1    connecting to 127.0.0.1:3000
2020.01.31 00:01:51.798    Core 1    connected
2020.01.31 00:01:51.819    Core 1    authorized (agent build 2307)
2020.01.31 00:01:51.823    Tester    EURUSD,M15 (MetaQuotes-Demo): testing of Experts\Robot EURUSD-M15.ex5 from 2019.12.01 00:00 to 2020.01.20 00:00
2020.01.31 00:01:51.855    Core 1    common synchronization completed
2020.01.31 00:01:51.897    Core 1    EURUSD: ticks synchronized already [43 bytes]
2020.01.31 00:01:58.001    Core 1    MetaTester 5 started on 127.0.0.1:3000
2020.01.31 00:01:58.001    Core 1    initialization finished
2020.01.31 00:01:58.001    Core 1    login (build 2307)
2020.01.31 00:01:58.001    Core 1    4372 bytes of account info loaded
2020.01.31 00:01:58.001    Core 1    1482 bytes of tester parameters loaded
2020.01.31 00:01:58.001    Core 1    25788 bytes of input parameters loaded
2020.01.31 00:01:58.001    Core 1    424 bytes of symbols list loaded
2020.01.31 00:01:58.001    Core 1    expert file added: Experts\Robot EURUSD-M15.ex5. 687314 bytes loaded
2020.01.31 00:01:58.001    Core 1    11415 Mb available, 142 blocks set for ticks generating
2020.01.31 00:01:58.001    Core 1    initial deposit 10000.00 USD, leverage 1:200
2020.01.31 00:01:58.001    Core 1    successfully initialized
2020.01.31 00:01:58.001    Core 1    673 Kb of total initialization data received
2020.01.31 00:01:58.001    Core 1    Intel Core i7-8650U  @ 1.90GHz, 16308 MB
2020.01.31 00:01:58.001    Core 1    EURUSD: symbol to be synchronized
2020.01.31 00:01:58.001    Core 1    EURUSD: symbol synchronized, 3720 bytes of symbol info received
2020.01.31 00:01:58.001    Core 1    EURUSD: load 27 bytes of history data to synchronize in 0:00:00.004
2020.01.31 00:01:58.001    Core 1    EURUSD: history synchronized from 2018.01.02 to 2020.01.20
2020.01.31 00:01:58.001    Core 1    EURUSD: ticks synchronization started
2020.01.31 00:01:58.001    Core 1    EURUSD: load 34 bytes of tick data to synchronize in 0:00:00.000
2020.01.31 00:01:58.001    Core 1    EURUSD: history ticks synchronized from 2019.01.02 to 2020.01.17
2020.01.31 00:01:58.001    Core 1    EURUSD,M15: history cache allocated for 51117 bars and contains 47620 bars from 2018.01.02 00:00 to 2019.11.29 23:45
2020.01.31 00:01:58.001    Core 1    EURUSD,M15: history begins from 2018.01.02 00:00
2020.01.31 00:01:58.001    Core 1    EURUSD,M15 (MetaQuotes-Demo): generating based on real ticks
2020.01.31 00:01:58.001    Core 1    EURUSD,M15: testing of Experts\Robot EURUSD-M15.ex5 from 2019.12.01 00:00 to 2020.01.20 00:00 started with inputs:
2020.01.31 00:01:58.001    Core 1      StrategyProperties__=------------
2020.01.31 00:01:58.001    Core 1      Entry_Amount=1
2020.01.31 00:01:58.001    Core 1      Maximum_Amount=100
2020.01.31 00:01:58.001    Core 1      Adding_Amount=1
2020.01.31 00:01:58.001    Core 1      Reducing_Amount=1
2020.01.31 00:01:58.001    Core 1      Stop_Loss=5000
2020.01.31 00:01:58.001    Core 1      Take_Profit=585
2020.01.31 00:01:58.001    Core 1      Break_Even=1000
2020.01.31 00:01:58.001    Core 1      Martingale_Multiplier=0.5
2020.01.31 00:01:58.001    Core 1      IndicatorName1=Bears Power
2020.01.31 00:01:58.001    Core 1      Slot1IndParam0=17
2020.01.31 00:01:58.001    Core 1      Slot1IndParam1=0
2020.01.31 00:01:58.001    Core 1      IndicatorName2=Accelerator Oscillator
2020.01.31 00:01:58.001    Core 1      Slot2IndParam0=24
2020.01.31 00:01:58.001    Core 1      Slot2IndParam1=6
2020.01.31 00:01:58.001    Core 1      Slot2IndParam2=2
2020.01.31 00:01:58.001    Core 1      Slot2IndParam3=0
2020.01.31 00:01:58.001    Core 1      IndicatorName3=Bollinger Bands
2020.01.31 00:01:58.001    Core 1      Slot3IndParam0=2
2020.01.31 00:01:58.001    Core 1      Slot3IndParam1=1.92
2020.01.31 00:01:58.001    Core 1      IndicatorName4=Directional Indicators
2020.01.31 00:01:58.001    Core 1      Slot4IndParam0=7
2020.01.31 00:01:58.001    Core 1      IndicatorName6=Previous High Low
2020.01.31 00:01:58.001    Core 1      Slot6IndParam0=-25
2020.01.31 00:01:58.001    Core 1      IndicatorName7=Donchian Channel
2020.01.31 00:01:58.001    Core 1      Slot7IndParam0=10
2020.01.31 00:01:58.001    Core 1      Slot7IndParam1=1
2020.01.31 00:01:58.001    Core 1      IndicatorName8=Fisher Transform
2020.01.31 00:01:58.001    Core 1      Slot8IndParam0=3
2020.01.31 00:01:58.001    Core 1      IndicatorName9=Week Closing 2
2020.01.31 00:01:58.001    Core 1      Slot9IndParam0=19
2020.01.31 00:01:58.001    Core 1      Slot9IndParam1=59
2020.01.31 00:01:58.001    Core 1      IndicatorName10=Accelerator Oscillator
2020.01.31 00:01:58.001    Core 1      Slot10IndParam0=24
2020.01.31 00:01:58.001    Core 1      Slot10IndParam1=27
2020.01.31 00:01:58.001    Core 1      Slot10IndParam2=7
2020.01.31 00:01:58.001    Core 1      Slot10IndParam3=0
2020.01.31 00:01:58.001    Core 1      IndicatorName11=Commodity Channel Index
2020.01.31 00:01:58.001    Core 1      Slot11IndParam0=11
2020.01.31 00:01:58.001    Core 1      Slot11IndParam1=100
2020.01.31 00:01:58.001    Core 1      Slot11IndParam2=0
2020.01.31 00:01:58.001    Core 1      IndicatorName12=Bears Power
2020.01.31 00:01:58.001    Core 1      Slot12IndParam0=2
2020.01.31 00:01:58.001    Core 1      Slot12IndParam1=0
2020.01.31 00:01:58.001    Core 1      ExpertSettings__=------------
2020.01.31 00:01:58.001    Core 1      Protection_Min_Account=0
2020.01.31 00:01:58.001    Core 1      Protection_Max_StopLoss=0
2020.01.31 00:01:58.001    Core 1      Bar_Close_Advance=15
2020.01.31 00:01:58.001    Core 1      Write_Log_File=false
2020.01.31 00:01:58.001    Core 1      Order_Comment=
2020.01.31 00:01:58.001    Core 1    2019.12.01 00:00:00   Robot EURUSD-M15 loaded.
2020.01.31 00:01:58.001    Core 1    2019.12.01 00:00:00   Loading data: EURUSD,M15, Minumum bars: 30...
2020.01.31 00:01:58.001    Core 1    2019.12.01 00:00:00   The expert uses 3000 bars.
2020.01.31 00:01:58.001    Core 1    EURUSD : real ticks begin from 2019.01.02 00:00:00

So, it is the opposite of "doesn't work".

Try to run it for a shorter period - let's say one month.
Set delay to Zero,
Disable the optimization.

It is slow because it precesses every tick, which is a huge waste of time.

If you want faster experts, use EA Studio and test them on "Open price only".

Just run your Expert. It "works"

2020.01.30 23:21:48.563    Core 1    2019.10.01 00:00:00   Robot EURUSD-M15 loaded.
2020.01.30 23:21:48.563    Core 1    2019.10.01 00:00:00   Loading data: EURUSD,M15, Minumum bars: 30...
2020.01.30 23:21:48.563    Core 1    2019.10.01 00:00:00   The expert uses 3000 bars.
2020.01.30 23:22:31.287    Core 1    2019.10.01 09:07:40   instant sell 0.10 EURUSD at 1.08857 sl: 1.13860 tp: 1.08275 (1.08857 / 1.08860 / 1.08857)
2020.01.30 23:22:31.287    Core 1    2019.10.01 09:07:40   deal #2 sell 0.10 EURUSD at 1.08857 done (based on order #2)
2020.01.30 23:22:31.287    Core 1    2019.10.01 09:07:40   deal performed [#2 sell 0.10 EURUSD at 1.08857]
2020.01.30 23:22:31.287    Core 1    2019.10.01 09:07:40   order performed sell 0.10 at 1.08857 [#2 sell 0.10 EURUSD at 1.08857]

could you send me a screenshoot please ?