First get the item that you want 99x of them at the 6th item slot.Then go to the man that shows you how to catch pokemon.Watch him then fly to Cinnibar İsland and surf on the right side of the sea.DO NOT USE LEFT OR RİGHT KEYS WHEN YOUR İN THE WATER!!.JUST SWİM UP AND DOWN UNTİL AN MİSSİNGNO OR A (GLİTCH)M(gLİTCH) POKEMON.DONT CATCH THEM İF YOU DO İT WİLL MESSUP YOUR GAME.WHEN YOU SEE THE MİSSİNGNO OR THE OTHER ONE just run and check out your 6th item there will be (glitch)x9 its not just x9 keep using it then if there be x 9 then that glitch is invisible.use it until it appears x 99. I used to make rare candys and do them to my pokemon its flowing the fun of the game.let me give you an hint too. after x 99 use the item but if you want to do the cheat again there must be at least x 1 of your item.if you dont do (i did it once)you must find another of that item.Good luck!