def METHOD_NAME(self, entry_name: str) -> None:
    assert bui.app.classic is not None
    entry = self._get_entry(entry_name)
    bui.app.classic.value_test(entry['name'], change=-entry['increment'])
    # pylint: disable=consider-using-f-string
    bui.textwidget(
        edit=entry['widget'],
        text='%.4g' % bui.app.classic.value_test(entry['name']),
    )