Okay so, I technically made an account just to ask this, I've been looking throughout zdoom's Forum without finding what I'm looking for.
I was playing Russian Overkill and found out this thing "infinite Doubler Backpack" and became curious about how is it possible to expand -or stack- backpacks. How can this be done? I tried with the SetAmmoCapacity example in Zdoom's webpage (https://zdoom.org/wiki/SetAmmoCapacity) but that didn't work, either my logic sucks or my basic programming skills are toooooo basic, can someone at least explain how can that be achieved?