Infopath 2010 Coding with C#

currently i'm using Microsoft Office 2010 in FRENCH version, the problem is that there's a mild difference even in coding fml. I need to know how to locate the XpathNavigator in infopath designer 2010 manualy to be able to put the right XpathNavigator in C# editor.

This is the english version given by the tutorial : "/my:myFields/my:employee"

public void FormEvents_Loading(object sender, LoadingEventArgs e)
    {
        XPathNavigator dataSource;
        dataSource = this.MainDataSource.CreateNavigator();
        dataSource.SelectSingleNode(
            "/my:myFields/my:employee", NamespaceManager).SetValue(this.User.UserName);

    }