That makes the 20 days option appear in the drop down list nicely, but when it is selected the auction still defaults to 15 days duration.
Content visible to verified customers only.
The other ones work ok, but not the one I added.
Oddly the other ones default to 15 even if I change the option value (ie. if I change 15 to be 20, it's still 15 when the auction starts. So where is it getting 15 from?)