void main()
{
    object oItem = GetFirstItemInInventory(OBJECT_SELF);
    effect eVis = EffectVisualEffect(VFX_FNF_MYSTICAL_EXPLOSION);
    object oDoor = GetObjectByTag("WATERPLANEDOOR");

    while (GetIsObjectValid(oItem))
    {
    if(GetTag(oItem)!= "havengem") return;

    DestroyObject(oItem, 0.0);
    ApplyEffectToObject(DURATION_TYPE_INSTANT, eVis, OBJECT_SELF);

    SetLocked(oDoor, FALSE);

    oItem = GetNextItemInInventory(OBJECT_SELF);
    }

}