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Ok... I just didn't know if you didn't realize it and put it in OU because it was going to be a scyther and then forget and do it again because scyther is UU but I guess you did know and had everything under control.
RNG Reporter does work in Emerald, too. However, we don't know how to control the ID and SID in the 3rd generation games, so you'll have to work with whatever the game gives you, I guess.