Please note this is an old forum thread. Information in this post may be out-to-date and/or erroneous.
Every phpdocx version includes new features and improvements. Previously unsupported features may have been added to newer releases, or past issues may have been corrected.
You should be able to do that using arrays of arrays. Please read intermediate/List_nested.php example; it doesn't use a template but you'll get the way to do that.