Is there anyway to get the Client_Id or any Custom value passed in authorization_endpoint url as parameter ? For example in below url we pass **client_id** and at the end there is a parameter **lan** (Language) . I want to get this Client_ID and Lan value in the Custom Script (getPageForStep) or custom xhtml page. https://iam.centroxy.com/oxauth/restv1/authorize?client_id=%40%2111ED.BF5C.22C4.DD5A%210001%21633A.9D3C%210008%21A222.FAF7.5283.9195&redirect_uri=https%3A%2F%2Fclient.example.com%3A44394%2Fcallback&response_mode=form_post&response_type=code%20id_token&scope=openid%20profile&state=OpenIdConnect.AuthenticationProperties%3DDUpOH-DobdZR9BUOHw5l7cVi52wfWR3Na0QaNI-8AP4sH9sBxsglzdJXv7SZPgxJlLlONIWugpLlK5pYNRxqfTvIhp59UjltXlbEBw6piXncbUos6_1U_saaNhy3X-6K1BMNBiXCvrol9YVDuzALFMGOTT8B94IkTlp0eyPn_ykWSYmdgBuCpxQZ7PZ3Dpzx&nonce=636718332234621813.MzkzZDFhZWEtY2ZmNC00NDZjLWFhNDQtMWJiYzBkZTNmZWYwOGVjYTJjZjMtNDc4Yy00YzZmLWJkYjgtZTg3N2VmODczMjhm&acr_values=test_acr&lan=US-EN&x-client-SKU=ID_NET451&x-client-ver=5.2.2.0