String to array

var loader2:URLLoader = URLLoader(event.target);
var cc:URLVariables = new URLVariables(loader2.data);

//cc[“Data”] is equal to “1,2,3,4,5,6,7,8”

var Data:Array = new Array(cc[“Data”])
for each (var Num:int in Data)
{
trace(Num)
}

what im attempting is to turn this string of a array of numbers into a array on numbers.
im wondering how would i go about doing this?