When I try to use these codes in VBA (or VB):
01FFE7FF
01FFEAFF
I get an error saying they are invalid gameshark codes. However, they work fine in BGB and TGBdual, and they should be perfectly valid.
(Those codes are for Gameboy Wars 1, Turbo, and 2 (same codes work for all three games) if you want to try them out yourself.)