Topic: How to grab authors names from other field

Hi guys! How to make BRC to grab %author% from NAME filed insted of USERNAME in the wordpress USERS table? I want vidget to show proper names like Harry Potter, instead of logins like harry.potter.95. I use social authentification and there are some social networks where logins are just numbers (id123123 etc). It's not good when there is a comment left by someone with name id123123.

THank you!