Choosing a value from list box

Hi,

I am trying to pick a value from list box which contains a string. I don't have the exact/ full value present in the drop down.

 Eg:

desktop.<DomListBox> find("object01").select("Working on silk");

Here I wont be knowing the entire String value -"Working on silk", so I want to chose the string which has "silk", How to achieve that?

Thanks,

Alice