Send amount on login screen

[muhammadyahyaa]

Hi,
Is there any possibility we can send the charge amount parameter to the login screen? And get the amount on the Authorize page?

In my case, I offering a user upgrade using amazon payment. I Integrated the amazon button on the upgrade page but when the user clicks on the Amazon payment button it redirects to the login page. How I can send the amount parameter which I need after login.?