Actually, this is the code that maxes the points you earn by completeing pokethlon events:
Pokethlon Point Max (Select)
94000130 FFFB0000
62111880 00000000
B2111880 00000000
0000E558 0001869F
D2000000 00000000
The code that mabscottsville was asking about was intended to make your score 999 points, but sadly, it indeed doesn't work. I've informed elixirdream at the GBAtemp Cheat Forum, who originally made the code, that it doesn't work and it will be removed from the database the next time he make's an update.