API How to set sorting by avg_quantity DESC

Hi, I try to get top e-commerce products, but sorting does not work


http://piwik.foobar.ua/index.php?module=API&method=Goals.getItemsSku&idSite=1&period=range&date=2012-12-25,2013-01-08&abandonedCarts=0&filter_sort_column=avg_quantity&filter_sort_order=desc&format=xml&token_auth=foobar

How to sort by avg_quantity?

known bug: API: Column sort does not always work for processed metrics · Issue #2838 · matomo-org/matomo · GitHub

Thank you, I’ve done post processing on PHP…