[Question] Reading the Exact Timeleft of an Auction

[CrimeTime]

Hey,
i'm trying to get the Exact Timeleft of an Auction via Lua_DoString, here my last try's:

Returns 0:
LuaDoString("name, texture, count, quality, canUse, level, minBid, minIncrement, buyoutPrice, duration, bidAmount, highBidder, owner, saleStatus = GetAuctionItemInfo(\"list\"," + index + ")");
return GetLocalizedTextInt("duration");

Returns 0:
LuaDoString("duration = GetAuctionItemTimeLeft(\"bidder\"," + index + ")");
return GetLocalizedTextInt("duration");

Returns 0:
LuaDoString("duration = GetAuctionItemTimeLeft(\"ownername\"," + index + ")");
return GetLocalizedTextInt("duration");

Retutns 4:
LuaDoString("duration = GetAuctionItemTimeLeft(\"list\"," + index + ")");
return GetLocalizedTextInt("duration");

here the Declaration to the 4:
http://wowprogramming.com/docs/api/GetAuctionItemTimeLeft

I've looked in the Lua Files of Blizzard from the Auctionhouse but diddnt found something with what i can Read that out.

[ddebug]

There is no lua command that will return the exact time left in the auction.

You should reverse GetAuctionItemTimeLeft() [API_GetAuctionItemTimeLeft]. It, internally, makes a call to a function which retrieves the time left. Take a look where the current tick is compared...

[CrimeTime]

that's what i guessed how it Read it, but how to reverse it, i think i would need a new Function which works with Offsets to do that.
or i'm wrong with that?