How to change code's activation keys

Example:

Heres the code for pokemon max cash

94000130 fcff0000
b21c4d28 00000000
b0000004 00000000
000002e4 000f423f
d2000000 00000000

Now at the beginning of it theres this:
94000130 fcff0000

Now on the second line you see the FCFF? thats tha activation code that it uses.

Heres a list of all the activation codes:
FFFE A
FFFD B
FFFB Select
FFF7 Start
FFEF Right
FFDF Left
FFBF Up
FF7F Down
FEFF Right Trigger
FDFF Left Trigger
NDS Activator Values
FBFF X
F7FF Y

(If you want to mix buttons do the formula A+B is FFFE & FFFD so the button combo for it is FFFC so the different between the two letters is what it increases the digit by!)
All you need to do is change those 4 digits.

Now I'm going to make it so all you need to press Select.
94000130 fffb0000

So now the new code is
94000130 fffb0000
b21c4d28 00000000
b0000004 00000000
000002e4 000f423f
d2000000 00000000



There you have it, now if your L+R buttons are broken or just not working you can change the code to your liking.

Enjoy!