No, no, and NO!!! According to Marriland of Gamefaqs:
This same quote holds true for UK Pokemon games: Although you can trade between DS games from different regions, you can't transfer a Pokemon from say, a UK GBA Pokemon game to a US D/P unless you trade the Pokemon to a US GBA cart from the UK GBA Pokemon game, then transfer it from that very same US GBA cart that you traded it to, so I doubt that you can transfer Pokemon to Pal Park in your D/P game if the regions of that particular D/P game and the GBA Pokemon game are different from each other...
1.Same language
2.Different region
So, maybe.
Great guide Leebui.