I tested the strategy separately for long positions only and for short positions only.
It shows profit in both directions.
To separate the directions I used "Long or Short" filter.
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Forex Strategy Builder v2.5.3.1
Strategy name: New
Exported on: 9/13/2007 10:18:48 PM
Market: EURUSD 1 Day
Spread: 4 pips
Swap Number: 1 pip
Intrabar scanning: Not accomplished
Interpolation method: Pessimistic scenario
Ambiguous bars: 0
Tested bars: 4528
Balance: 3032 pips
Minimum account: -364 pips
Maximum drawdown: 848 pips
Time in position: 31 %
A same direction signal - Does nothing
An opposite direction signal - Does nothing
[Opening point of the position]
Donchian Channel
Enter long at the Up Band
Base price - High & Low
Period - 55
Shift - 0
Use previous bar value - Yes
[Opening logic condition]
Long or Short
Open long positions only <----------------------------- Long entry only
[Closing point of the position]
Donchian Channel
Exit long at the Down Band
Base price - High & Low
Period - 20
Shift - 0
Use previous bar value - Yes
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Forex Strategy Builder v2.5.3.1
Strategy name: New
Exported on: 9/13/2007 10:24:12 PM
Market: EURUSD 1 Day
Spread: 4 pips
Swap Number: 1 pip
Intrabar scanning: Not accomplished
Interpolation method: Pessimistic scenario
Ambiguous bars: 0
Tested bars: 4528
Balance: 456 pips
Minimum account: -538 pips
Maximum drawdown: 1546 pips
Time in position: 33 %
A same direction signal - Does nothing
An opposite direction signal - Does nothing
[Opening point of the position]
Donchian Channel
Enter long at the Up Band
Base price - High & Low
Period - 55
Shift - 0
Use previous bar value - Yes
[Opening logic condition]
Long or Short
Open short positions only <----------------------- Short entry only
[Closing point of the position]
Donchian Channel
Exit long at the Down Band
Base price - High & Low
Period - 20
Shift - 0
Use previous bar value - Yes
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Are you missing that the FSB tests in both direction simultaneously?
You need to enter the logic for the long positions and FSB automatically makes the short one for you.
When you set long entry point at the Upper Band FSB sets the short entry point at the Lower Band.
The long exit at the Down Band of "Donchian Channel 20" means - close the short at the Upper Band.
If you mean that the profit from the short positions is lower than the profit from the longs - the explanation is that this strategy is trend following and because of the strong raise of EURUSD it is normal for the long positions to bring more profit.
If you need more info do not hesitate to ask!