I phoned with AA Belgium, but the aa agent wasn't sure at all, first he said 10K to upgrade and afterwards he said it was 20K, so I think I'll need to wait until I get my tickets booked and get the upgrade to see whow many miles I'll need to upgrade.

Thanks for reminding me for the Plat challenge, but I'll be plat already by then, because this trip EZE-JFK-BRU is to break up my RTW I'm planning to do starting in October. Even Better If everything is going as planned this trip should make me EXP