Auth.js magic link resend provider not sending URL params to signIn

[killjoy2013]

I'm using "next-auth": "^5.0.0-beta.22" in a Next.js 14 application. Using Resend provider to send magic links. So far so good. Now, I need to send some additional data when sending email. Trying it with URLParams;

 const params = new URLSearchParams({ companyId: "9" });

    await signIn(
      "resend",
      {
        email,
        redirect: false,
        callbackUrl: "/feedback",
      },
      params
    );

However, in SignIn callback, I could not get this param with companyId. Am I missing sth? How can I send this additional params?
Thankx