Connection to api with Oauth 2.0 with access token

This may be a bit of a n00b question, but I am trying to set up a connection to Visma.net with the OAuth 2.0 http module, and am following this guide: https://www.make.com/en/help/tools/http#make-an-oauth-2-0-request

My struggle is with the section for the Access token parameters. In the guide it says to put in as a key value pair the code and “The code returned by the authorization request”, but I have no way of seeing this data as far as I can tell when I am setting it up and can’t see a way to map any dynamic data in this field during the setup.

If anyone has any experience with this any help would be greatly appreciated.

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