AWS NLB annotation service.beta.kubernetes.io/aws-load-balancer-type: "external" is not taking effect

[mithunkrb]

We specify the annotation service.beta.kubernetes.io/aws-load-balancer-type: "external" in Service as a Load Balancer to let latest version of AWS LBC controller pick the resource and provision a nlb instead of classic.

However, when applying the same annotation in Gateway Resource, its still deploying classic load balancer which indicates that this annotation is not taking effect.

Could you please help with the correct annotation to be used with Gateway Resource to be able to let latest version of AWS LBC controller to pick the resource and provision a nlb?