Hi @Minh Tra , in the SO thread, this link details how you can do this. In the HTTP request you would have to add the UsePolicyInRedirectUri attribute like this:
GET https://login.contoso.com/oauth/v2/authorization?
client_id=12345
&response_type=code
&response_mode=query
&redirect_uri=urn%3Aietf%3Awg%3Aoauth%3A2.0%3Aoob
&scope=profile%20offline_access
&UsePolicyInRedirectUri = [LINK HERE]
&redirect_uri=https%3a%2f%2fabrikam.b2clogin.com%2fabrikam.onmicrosoft.com%2foauth2%2fauthresp
&state=...
Please let me know if this helps or if you have any questions.
Best,
James