Change the "send from" name when using Gmail Pack?

I used my google app account to log into coda. the email is like
When i use the Gmail pack to send email from coda, the recipient will see the email is from “lex”, all lower case, no last name. It just looks very spamy and unprofessional. Is there a way to change it so that it shows my proper full name from the recipient’s side?

The optional parameter “Send From” is only for specifying an from-email-address.