Help me with simple script

[Zeimer]

Hi. I found an bugged quest, and I'm going to abuse it hard : ). All I need is script working like that:
1. Interact with NPC.
2. Click on the quest to get the window with its description.
3. Click complete.
4. Repeat ( need to be faster than 2 seconds, else it wont help me ).

Thanks in advance and sorry for bad english.

[Sarick]

/script SelectGossipAvailableQuest(1)

/script SelectGossipActiveQuest(1)

/script CompleteQuest()

/script SelectGossipOption(1)

/script AcceptQuest()

[Zeimer]

Don't work for me. It stops before hitting the 'complete' button ;d

[Sarick]

/script SelectGossipActiveQuest(1)

Cut it out of script.

[Zeimer]

Now it don't even talk to the npc. Maybe it's working like that because I play on server with lots of custom features, I don't know.

Return Trip - Quest - World of Warcraft

That's the quest, maybe it will help you.