Problem in creating more than one Qt::UserRole QListWidgetItem

[Lykurg]

QListWidgetItem it;
    it.setData(Qt::UserRole, 1);
    it.setData(Qt::UserRole+1, 2);
    qWarning() << it.data(Qt::UserRole);
    qWarning() << it.data(Qt::UserRole + 1);

QListWidgetItem it;
    it.setData(Qt::UserRole, 1);
    it.setData(Qt::UserRole+1, 2);
    qWarning() << it.data(Qt::UserRole);
    qWarning() << it.data(Qt::UserRole + 1);

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works fine, so please go ahead and try to debug your code yourself.
And a minimal example would be better. Also the use of [CODE] could make your code more readable.