How can user change the jre parameter values after the exe is generated in Launch4j?

Is it possible to change the jre parameter values after the exe file is generated through Launch4j?

The ideal scenario is like this:

The default parameter values are applied when the program is started. However, when the user wants to change some jre parameter values, he 开发者_StackOverflow中文版goes to a .ini file, MyProgram.ini for example, changes the values there, and the new values will be applied next time the program is started. I think eclipse uses the same way for its memory and some other parameter settings.

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It's documented on the launch4j page.