Convert String to Date - DS 1.2

Hello,

Has anyone converted a string date value i.e. 41517 = 8/31/2013 in Design Studio 1.2?  I checked the Convert function that is available and the options that are present are:

Is there a CAST function? or a method that would convert the example to a Date data type?  Any help would be appriciated.

Many thanks,

Kris