[jQuery] Validate. Can I validate using 2 values?

Hello,
I am using the following to validate an email field:
Email: { email: true, remote: "/Account/FindEmail", required: true }
I am checking if there is already an account with that email.
In my form I also have an input where the user inserts its username.
When validating the email I need to send also the Username an not only
the email.
Can I do this?
Thanks,
Miguel