Multiple Logout redirect urls?

I am wanting to use mutlple logout redirects.
I have the following in the allowed logouts (with clientid)
https://www.zzzzz.com/index.php, https://www.zzzzz.com/index.php&newuserdone=1

And in my code the following link
https://zzzzz.us.auth0.com/v2/logout?returnTo=https://www.zzzzzz.com/index.php&newuserdone=1&client_id=********

However - users is always redirected to index.php withouth the newuserdone parameter.
Is this possible to do?