# \#custom-param

**URL:** https://community.auth0.com/tag/custom-param/357.md

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## [Custom sign-up link in Classic Universal Login whose href is environment dependant](https://community.auth0.com/t/custom-sign-up-link-in-classic-universal-login-whose-href-is-environment-dependant/64640)

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**Author:** [@mob](https://community.auth0.com/u/mob)\
**Replies:** 2\
**Last updated:** [June 23, 2021, 2:06pm UTC](https://community.auth0.com/t/custom-sign-up-link-in-classic-universal-login-whose-href-is-environment-dependant/64640 "2021-06-23T14:06:05Z")

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Hi! I’m implementing a custom login page using the Classic Universal Login to add a custom sign-up link in the form. The problem I’m encountering revolves around the URL tied up to that link. See, we have three tenant…

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## [Send custom params from auth0-spa-js loginWithRedirect() for using in rules](https://community.auth0.com/t/send-custom-params-from-auth0-spa-js-loginwithredirect-for-using-in-rules/63686)

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**Author:** [@pratikpalse](https://community.auth0.com/u/pratikpalse)\
**Replies:** 3\
**Last updated:** [June 4, 2021, 5:56pm UTC](https://community.auth0.com/t/send-custom-params-from-auth0-spa-js-loginwithredirect-for-using-in-rules/63686 "2021-06-04T17:56:30Z")

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Dear Community, I’m developing reactJS app using auth0-spa-js. I want to pass custom params through the loginWithRedirect() function and use same in rules to implement some custom logic. Params: roleID uuid venue uui…

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## [Append query param to an existing /authorize transaction](https://community.auth0.com/t/append-query-param-to-an-existing-authorize-transaction/58515)

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**Author:** [@mamacdon](https://community.auth0.com/u/mamacdon)\
**Replies:** 2\
**Last updated:** [March 1, 2021, 7:49am UTC](https://community.auth0.com/t/append-query-param-to-an-existing-authorize-transaction/58515 "2021-03-01T07:49:14Z")

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I have a hosted login page that offers the user a choice between signup and login experiences. I want the user’s choice (signup or login) to end up in the context.request.query object of my Auth0 Rule, so I can use it to…