Opposite of Health Conversion (Indulge)

[Damid]

I'd like to change First Aid to do the absolute opposite of health conversion, using SP to heal and getting an amount of HP based on the SP used; but I don't actually know how to do this :/

 

I tried to just use the health conversion and change the HP for SP and vice-versa, but it doesn't seem to be that easy. This is the configuration of health conversion on .../src/map/skill.c:

 

case PF_HPCONVERSION:
{
int hp, sp;
hp = sstatus->max_hp/10;
sp = hp * 10 * skill_lv / 100;
if (!status_charge(src,hp,0)) {
if (sd) clif_skill_fail(sd,skill_id,USESKILL_FAIL_LEVEL,0);
break;
}
clif_skill_nodamage(src, bl, skill_id, skill_lv, 1);
status_heal(bl,0,sp,2);
}
break;