Hi Seiji.
Thank you for your reply.
I do not want user information.
I want information on results selected by the user.
·Screen transition
User selection screen ⇒ Redirect ⇒ Samur assertion issue screen
·Image of user selection screen
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Which attribute do you want to log in?
■ E-mail address
□ Full name
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⇒ In the above case, assign an e-mail address to the assertion attribute
and throw it to the SP side.
In the user selection screen, put the selection result (this time "mail address selected") in HTTPHeder or Cookie,
If you can pass it to the customizeAssertion method called on the Samur assertion issue screen, I think that the above operation can be realized.