Dropdown.setItem() - populate using variables

Hi,

I have a requirement is to have a dropdown box showing the current year and the past 2 years (i.e. 2014, 2013 and 2012).  One way is to parse the current year using Application.getInfo().dateNow.  However, the dropdown.setItem() can only accept ValueTextList.

Can anyone please advise how a string / int variable can be converted to ValueTextList format?

Many thanks,

Jianyun