Correct way to set properties via Kong/Kong helm chart

Kubernetes
1

I am using the Kong/Kong helm chart and need to configure some values. I am deploying the chart via Terraform so my values are passed via a yaml file. My main setup is working fine but I need to configure the proxy_protocol settings and also the proxy buffer size info due to cookies being returned via IdentityServer. At present, I have the following in my yaml document but none of the setting in the env section are being applied. I cannot find examples of how to provide these settings to the helm chart correctly.

deployment:
  daemonset: true
ingressController:
  installCRDs: false
proxy:
  externalTrafficPolicy: Local
  trusted_ips: 0.0.0.0/0,::/0
  env:
    KONG_TRUSTED_IPS: 0.0.0.0/0,::/0
    KONG_PROXY_LISTEN: "0.0.0.0:8000 proxy_protocol, 0.0.0.0:8443 ssl proxy_protocol"
    KONG_REAL_IP_HEADER: proxy_protocol
    proxy_buffer_size: 128k
    proxy_buffers: 4 256k
    proxy_busy_buffers_size: 256k
    large_client_header_buffers: 4 256k
2

For anyone else facing this issue, the solution is as follows:

deployment:
  daemonset: true
ingressController:
  installCRDs: false
env:
  trusted_ips: 0.0.0.0/0,::/0
  proxy_listen: "0.0.0.0:8000 proxy_protocol, 0.0.0.0:8443 ssl proxy_protocol"
  real_ip_header: proxy_protocol
  nginx_proxy_proxy_buffer_size: 160k
  kong_nginx_proxy_proxy_buffers: 64 160k
proxy:
  externalTrafficPolicy: Local