void main()
{
    object oPlayer = GetFirstObjectInArea(OBJECT_SELF);
    while (oPlayer != OBJECT_INVALID)
    {
        int iSave = FortitudeSave(oPlayer, 35, SAVING_THROW_TYPE_COLD, OBJECT_SELF);
        switch (iSave)
        {
            case 0: // Failed
                ApplyEffectToObject(DURATION_TYPE_INSTANT, EffectDamage(20, DAMAGE_TYPE_COLD, DAMAGE_POWER_NORMAL), oPlayer);
                break;
            case 1: // Saved
                ApplyEffectToObject(DURATION_TYPE_INSTANT, EffectDamage(10, DAMAGE_TYPE_COLD, DAMAGE_POWER_NORMAL), oPlayer);
                break;
            default: // Immune
                break;
        }
        oPlayer = GetNextObjectInArea(OBJECT_SELF);
    }
}