How to configure a computed property within a TypeList element

Terraform Providers
1

Hi,
I’m working on a official provider.
We are trying to implement a new element within an existing resource which looks like this…

"waf": {
	Type:     schema.TypeList,
	Optional: true,
	MaxItems: 1,
	Elem: &schema.Resource{
		Schema: map[string]*schema.Schema{
			"response_object": {
				Type:        schema.TypeString,
				Required:    true,
			},
			"prefetch_condition": {
				Type:        schema.TypeString,
				Required:    true,
			},
			"waf_id": {
				Type:        schema.TypeString,
				Computed:    true,
			},
		},
	},

‘’’

However the computed property “waf_id” doesn’t seem to be recognised and therefore it doesn’t show on the plan (plan bellow).


      + waf {
          + prefetch_condition = "Waf_Prefetch"
          + response_object    = "WAF_Response"
        }

Is there a way I can make Terraform recognise “waf_id” as computed property?

Any advice would be greatly appreciated.

Many thanks,