1) Start a 100 mario challenge.Ok, that sounds good. Would you mind walking me through it?
2) In JGecko U, go into the search tab. For the search type, make it specific value, 8-bit, and equal. In the box, type the hexadecimal of the value of your lives. So, to start, type 64 in the box, because that is hexadecimal for 100, then press the search button.
3) Lose a life and search for 63 because it is 99 in hexadecimal.
4) Repeat this process until there is 1 result. Then keep going again to make sure you were searching in the right range.
Once you've got the address, tell me it, and I will tell you how it is put into a code.