Modify format date is displayed in email

I'm using the following script to customize the email submission of a form:

var oDoc = event.target;

oDoc.mailDoc({

bUI: true,

cTo: "user@company.com",

cSubject: "New CCR Form submitted on " + CurrentDate.rawValue + " by " + teamLead.rawValue,

cMsg: teamLead.rawValue + " has submitted a new Change Control Request form."+"\nPlease review and complete the Impact Assessment section, and if approved, submit to the IT Manager for further approval.\n\nREQID:"  + REQID.rawValue + "\nDue Date: " + dueDate.rawValue + "\nPriority: " + priority.rawValue,

});

It runs fine and formats the email as expected, the only issue I have is how the date is displayed in the email. The CurrentDate.rawValue in the subject line displays how I want it to, e.g. 02/17/15, but the dueDate.rawValue displays as 2015-02-17, even though the pattern setting in the document is mm/dd/yy and displays correctly in the form itself. Any idea why the date is changing it's display pattern when generating the email and how to fix it?