Empty report when item added with addItem

[javydreamercsw]

In my case I'm using a Tree Table and adding items with code like this:

addItem(new Object[]{r.getUniqueId(), new Label(), new Label(), new Label()}, r.getUniqueId());

That said I'm not adding Objects like on your examples. Is there a way to make it work without re-writing how I populate the table?