I'm using variables in a custom Thank You Message, which displays with no problems.  (I'm attaching a screen shot of the message setup.) The a, b - d, and FName variables create a reference number and display correctly on the screen message and downloaded form. However, if the form submitter opts to have the form sent via email, the email message is not displaying the entire reference number, just the dash: 

"Thank you for your submission. The tracking number assigned to your submission is: 

-  "

What should I do differently to have the reference appear in the email?  Thank you.