Call REST API within Auth0 forms and flows

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Hello, I am using Auth0 forms and flows feature to add new forms within my universal login page. I have seen the section in flows to call HTTP endpoint as below:

My API requires access_token generated by auth0. I want a way to call my API within flows and store the API response in variable so that I can show the response to the next step of my forms.

Is it possible? If yes then how?