[M1] Change missile drop value from bosses

[Sabii Rust]

I'm working on a hack that uses the mechanic of missile doors to block the way of the player, and the idea was getting missile expansions from the ones that the bosses give you when you defeat them, so if you defeat one you could open red doors, and if you defeat the two you could open yellow doors. The problem here is that the drop that the bosses gives you is excessive, and changing the amount of missiles you need per door would be very annoying to play.

So my question is: is there any way to change bosses missile drop value? Like with a hex value change or with a simple asm code?

PD: I'm using an expanded rom, and a patch that changes red door's missile cost to 1 and yellow's to 5

[DannyPlaysSomeGames]

Extremely late response.

However, 3DD95 is the value you're looking for ($4B = #75 in hex).