got working on memu now
i dont have this many legendary of one card so i always swap select (1) and unselect (0) till only one result left. then i add other cards to get to exchange screen. then i change result to -9999 and exchange. but the card just disappear normally, like the other and give me one new card. it didn't give me 9999 cards of selected one.
Just tried again. Still works for me in 64bit parallel space.
Video i made doing the mod
i dont have this many legendary of one card so i always swap select (1) and unselect (0) till only one result left. then i add other cards to get to exchange screen. then i change result to -9999 and exchange. but the card just disappear normally, like the other and give me one new card. it didn't give me 9999 cards of selected one.