How do I use the WHEN option in my Replicated config to create an "advanced configuration" section?

[grant]

I’d like to create a section of advanced configuration that is hidden by default.

[grant]

This is a simple config yaml that does that:

---
apiVersion: kots.io/v1beta1
kind: Config
metadata:
  name: config-sample
spec:
  groups:
  - name: simple_settings
    title: Simple Configuration
    description: Additional configuration options for normal users.
    items:
    - name: app_name
      title: Application Name
      type: text
      default: MyApp
      required: true
      description: "The name of your application."
    - name: admin_email
      title: Admin Email
      type: text
      default: admin@example.com
      required: true
      description: "The email of the administrator for notifications."
  - name: advanced_settings
    title: Advanced settings (Expert only)
    items:
    - name: show_advanced
      title: Show Advanced Configuration
      type: bool
      default: "0"
      help_text: "Check to enable advanced configuration options."
    - name: cache_size
      title: Cache Size (MB)
      type: text
      default: "512"
      required: true
      description: "Set the size of the cache in megabytes."
      when: repl{{ ConfigOptionEquals "show_advanced" "1" }}

    - name: max_connections
      title: Maximum Connections
      type: text
      default: "100"
      required: true
      description: "Maximum number of connections to the service."
      when: repl{{ ConfigOptionEquals "show_advanced" "1" }}

    - name: debug_mode
      title: Enable Debug Mode
      type: bool
      default: false
      required: false
      description: "Enable detailed debugging logs for troubleshooting."
      when: repl{{ ConfigOptionEquals "show_advanced" "1" }}

    - name: advanced_option_1
      title: Advanced Option 1
      type: text
      default: "default_value"
      required: false
      description: "Custom advanced option 1."
      when: repl{{ ConfigOptionEquals "show_advanced" "1" }}

    - name: advanced_option_2
      title: Advanced Option 2
      type: text
      default: "default_value"
      required: false
      description: "Custom advanced option 2."
      when: repl{{ ConfigOptionEquals "show_advanced" "1" }}

And produces the following config screen:

And once selected/expanded: