Tea Gameshark Code In Pokemon Yellow Help With Pokemon Leaf Green?

Help with Pokemon Leaf Green? - tea gameshark code in pokemon yellow

Ok. I can not get past the guards that are thirsty. I have some gameshark cheats and if I with the old lady who speaks only his Meowth. I deceive you again, and a code, but still does not work ... What am I missing? I have everything in Lavender town and have completed all of the gyms to date (I had to battle despite the fact that the leaders used deception to obtain all badges) to. Is this a failure of the gameshark? Help!

Yes - I know I should have cheated, but it's easier, and I'm lazy, lol