Hey Byron
The regex I gave you returns an array with the second item in the array being the string, so first check to make sure the return is not null and then grab the second item:
var theTextArray =Â text.sourceText.match(/[0-9]+(ST|ND|RD|TH)/g);
var theText = (theTextArray != null && theTextArray.length >=2) ? theTextArray[1] : "";
theText;