Hi ! just this reply to say you saved my day! (well, actually 3 days:-))
Your answer routed me to the right direction, using var_dump I managed to locate where my data whee located and they are in the meta data, so to retrieve the value and names of attribute variable product in an order you can find them in the metadata of the order item:
$metaData = $orderItem->get_meta(“pa_module”);
$moduleID=print_r($metaData, true);
I hope this will be helpful for other, thanks again for having taken the time to reply ??
Cheers