Sending Host header to API Gateway

Based on other reverse proxies, the Host header must be sent to aws API gateway when putting it behind a reverse proxy. See: https://stackoverflow.com/questions/39591495/nginx-proxy-pass-to-aws-api-gateway

Is this an equivalent configuration in a dynamic conf? This does not work. Any advice is appreciated.

[http.middlewares]
  [http.middlewares.tip-strip.replacePath]
    path = "/dev"
  [http.middlewares.testbl.headers.customRequestHeaders]
    Host = "myapi.execute-api.us-east-2.amazonaws.com"
 
[http.routers]
  [http.routers.tip-router]
    rule = "Host(`my.url`) && Path(`/path`)"
    service = "tip-service"
    middlewares = ["tip-strip", "testbl"]
    [http.routers.tip-router.tls] 

[http.services]
  [[http.services.tip-service.loadBalancer.servers]]
    url = "https://myapi.execute-api.us-east-2.amazonaws.com/"

Is this not possible?