zoho.loginuser to show full name instead of username

zoho.loginuser to show full name instead of username

Hi,

Can the command zoho.loginuser show full name instead of username. I have several field which i want to default to the user that can then be changed to other users (full name) that are in our system. We are using our system internally so the users will be set up by an admin therefore there wont be users accounts that doesn't match our list. 

Thank you in advance!