Action Replay Legendaries For Pokemon Diamond

If you have the action replay (you can buy it at a walmart for about $10) and Pokemon Diamond;you can follow these steps and get the legendaries Darkrai and Shaymin. Darkrai-turn on the walk/ run anywhere cheat and go to fullmoon island (you'll have to have the national pokedex). Don't go into the trees but just go right all the way and you'll get to Newmoon Island. Go into the trees and there's Darkrai (lv.40)! Make sure you have a bunch of ultra balls and awakenings! Shaymin- Activate the same code as Darkrai and go to the Pokemon League building but don't go in it. As soon as you get there go East until you reach a place (you can go there normally but this is faster). Now go to a flat rock and it's "shiny". Go north and you'll see this little thing that looks like a chia pet but it's Shaymin (just what it looks like). then keep on going it's long so you should pull out your bike. Go until you reach a place called Flower Paradise and go up the stairs and you'll see the real Shaymin (lv.30)and don't forget the ultra balls!