If you want to expand Advance Map to show up all your expanded pokemon in the wild editor:
1. Download HxD and install it
2. Open Advance Map .exe in HxD
3. Go to address D027C
4. You see 9C, that's 156. Don't worry, this is the end 156.
5. After that you have 28 extra entries (after Chimeco), bad egg (1), all unowns except for A (27). Then you have to add the amount of pokemon you added to that number, for instance 10. Which makes it 38.
6. Add the 38 to the 156. This makes 194.
7. If the above number is above 255, you have to use a different method.
8. Go to and scroll down, find your number (for instance 194) and read what's the hex, in this case hex C2.
9. Change the 9C in C2.
10. Save it and open Advance Map.
11. You can select your pokemon for wild pokemon!