Gaining a greater health from Potions?

I used the edit associated with Blowfish, and got my Superball/new Potion healing 1000 HP properly. However, I don't fully understand how to make it usable outside of battle?

You mean having a similar effect outside battle? In-battles effect are independent of outside battle menu effects. You need to code the same effect when fixed HP healing occurs.

Basically it's if index == superball, item's power ($B2) * constant. I could be 250 * 4 and should be done before C3/8C4F.