I know that, I've used it before. But if you're transferring pokemon from emerald and such, it's not going to work. Nintendo shut down the wifi for black/white/2, d/p/plt. So you can't even get them to pokemon bank. Look it up on serebii

Pokemon X and Y and the Pokemon Bank are unaffected, but yeah you can't transfer pokemon from r/s/e anymore. They cancelled that in may

@mana yeah I know it sucks