void main()
{
    object oPC = GetEnteringObject();
    object oKey = GetItemPossessedBy(oPC, "nk_fp_keygold");
    if (GetIsObjectValid(oKey))
    {
        object oBrain = GetNearestObjectByTag("nk_fp_brain", OBJECT_SELF, 1);
        SetLocalInt(oBrain, "GOLD", 1);
        ApplyEffectToObject(DURATION_TYPE_INSTANT, EffectVisualEffect(VFX_IMP_BREACH), oPC);
        SignalEvent(oBrain, EventUserDefined(1001));
    }
}