Hello, little trouble to make a quest, I have to click on a barrel to turnIn a quest, how to do?

Thanks in advance ;p

Good, I set true on not required in quest log But I do not know what to put in "is complete condition" because there is no object to bring back

The problem is that it click again on the barrel after rendering the quest

http://db.vanillagaming.org/?quest=403#wh-comments

This is the quest

Bump plz 

I dont see anything new here- whats stopping you just adding the barrel like any other quest NPC and ticking the box -  "is game object"???

Thank you for considering my case <3

That's what I did, and it turnIn the quest. The problem is that even after TurnIn the quest he continues to click on the barrel

In fact this quest doesn't PickUp, it is enable if one has the quest http://db.vanillagaming.org/?quest=310#comments
So my question that must be put in "Is complete conditon"

Bump :(