When I save a set of parameters in the "Define Parameters" dialog box that appears before back-testing, it appears in the "preset" drop-down list. However, without exception, the new preset never persists to the next back-test. Each time, the drop-down list is empty again, meaning that all parameters must be set up from scratch again. Am I missing something?

EDIT: "without exception" --> "when using a user-defined enum in an external library"

Have you saved the presets under custom name? If yes, it should be visible next time you run it. Check if the version you use is at least 2.14.28.6.

Yes, I save with a custom name each time, but it disappears from the list every time.

Here is exactly what I do:
1. Start strategy back-test
2. In the parameters dialog box, adjust parameters, replace "*Default Preset" with "camrev", click the save button, click ok. ("camrev" appears in the drop-down list)
3. Allow the strategy to run a bit an then click stop.
4. Wait a bit and start the strategy again.
5. Now, in the parameters dialog box, there is again only one entry in the presets drop-down list: "*Default Preset". All my settings have been lost.

I am using version 2.14.28.6, windows, and this bug happens without exception.
(About a year ago this problem did not exist, if I remember correctly.)

Weird, we are unable to reproduce it. Everything is saving correctly. Could you try to restore the default settings (File/Restore default) and try then?

I went to each tab in the "preferences" dialog box and clicked "default". Then I clicked "OK", and closed and restarted the platform. Then I tried again, and the bug is still there.


On the left is the parameters dialog box after saving a preset. On the right is the dialog box when it opens when I run the strategy again. As you can see, the saved preset ("camrev") has disappeared.

Please try File/Restore default

Okay. Will I lose the historical data?

I tried File/Restore default, and the problem is still there.

I don't know if it is related to this problem, but another thing I've noticed is that, after running a back-test, I have to press the "play" button on the historical tester twice before the back-test will run. The first click on "play" button elicits no response if a back-test has just completed/stopped.

Same here...
viewtopic.php?f=85&t=46929

Thanks ohnoes. I think the problem may have something to do with using user-defined enums as configurable parameters. On client start-up I am getting a similar exception to the one you list in viewtopic.php?f=85&t=46929

This is how this bug can be reproduced:

Create and compile an external library "libToReproducePresetBug.jar" that contains the file "userDefinedEnum.java":

package isak.odds;

/**
 * userDefinedEnum.java
 */
    public enum userDefinedEnum{
        valueA,
        valueB,
        valueC
    };

(I used Netbeans, but that shouldn't matter.)

Place "libToReproducePresetBug.jar" into the files directory and create the following strategy in the JForex client:

package jforex;

import java.util.*;

import com.dukascopy.api.*;

import isak.odds.*;

@Library("libToReproducePresetBug.jar")

@RequiresFullAccess
public class presetBugProducer implements IStrategy {  

    @Configurable("Setting 1")
    public userDefinedEnum setting1 = userDefinedEnum.valueA;
    
    private IEngine engine;
    private IConsole console;
    private IHistory history;
    private IContext context;
    private IIndicators indicators;
    private IUserInterface userInterface;
    
    public void onStart(IContext context) throws JFException {
        this.engine = context.getEngine();
        this.console = context.getConsole();
        this.history = context.getHistory();
        this.context = context;
        this.indicators = context.getIndicators();
        this.userInterface = context.getUserInterface();
    }

    public void onAccount(IAccount account) throws JFException {
    }

    public void onMessage(IMessage message) throws JFException {
    }

    public void onStop() throws JFException {
    }

    public void onTick(Instrument instrument, ITick tick) throws JFException {
    }
    
    public void onBar(Instrument instrument, Period period, IBar askBar, IBar bidBar) throws JFException {
    }
}

Now run a back-test, save a preset, stop the back-test, and try retrieving the preset on a subsequent run.

There was a point in the past when this bug was not present.

Summary:

• Cannot recall saved parameters (preset) if one of the parameters is a user-defined enum in external library.
• This problem occurs with live runs as well as back-testing.
• The bug was not present some months ago.
• Procedure to reproduce bug provided in last post above.
• Exceptions in Java console reveal a problem with using user-defined enum in external library as strategy parameter type.