Adding reference variable in OAuth policy

[revathi1]

How to add the reference variable in OAuth2.0 policy? suppose if we add an variable like AccessToken in the Request Header, How can we refere this Variable in the OAuth Policy?

[dchiesa1]

I'm not clear what you mean by "suppose if we add an variable like AccessToken in the Request Header, "

and also not clear on "How can we refere this Variable in the OAuth Policy?"

Maybe you can give an illustration or example of what you're hoping to achieve?  Eg

For example, suppose the inbound request looks like THIS and has THIS specific request header with THIS specific value.  Then I want the OAuth2 policy to do... WHAT?