Set Subject

Set Subject

Hi,

I've tried using the below to set my subject line on submission but it presents as
New Starter: undefined - undefined

var y=$CS.getText("GUDF_DATE1");
var x=$CS.getText("ServiceReq_User_UDF_CHAR1");
$CS.setValue("SUBJECT","New Starter: " +y+" - "+x);


Is there anything I need to be doing differently to get this to work please?

Database Name = Microsoft SQL Server
@Database Version = 10.50.1600@
@Current Build = 10001@