Gameshark Code for Pokemon Leafgreen on VBA on Mac?

I'm playing Pokemon leafgreen on a visualboy advance 1.7.4, and I accidentally traded away my exp share to an in game NPC so I can't get it back. I am looking for the master code and the code to get an exp share. I need these codes for the game shark. Can anyone help me? Ideally I'm looking for a... show more I'm playing Pokemon leafgreen on a visualboy advance 1.7.4, and I accidentally traded away my exp share to an in game NPC so I can't get it back. I am looking for the master code and the code to get an exp share. I need these codes for the game shark. Can anyone help me? Ideally I'm looking for a youtube video showing how to do it, because most of the codes I've seen don't work (or maybe I'm not doing it right).

Thanks!!!
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