Form Field default value help

Hello, have a form that has a text field that I am trying to have the output be

"SVC-Name"   where "name" equals another field.  

I have a hidden short text entry element and using the advanced tab the Default value set to SVC-{whoShould}.  

{whoShould} is the FirstName, LastName populated.  

The result I receive is the value from {whoShould} but without the SVC- in front. 

Is there a way to put text in front of the {whoShould} so the out put would be SVC-FirstName, LastName?   

I suggest you use the Form Calculation Widget.

Here is a cast that shows how you can achieve what you want.

DEMO: https://form.jotform.com/80105649459967

Let us know if you have further questions.