Post config options

Do post config options work in theme overrides? I tried to add a field to posts in blank-override/config.json :

"postConfig": [
    {
        "name": "scientificName",
        "label": "Scientific name:",
        "placeholder": "Enter scientific name of plant",
        "value": "",
        "type": "text"
    }
],

I entered text in the “Scientific name” text box in the post editor.

I added elements in my front page index.hbs :

{{#each posts}}

<article class="plant">

    <header>
        {{! post title }}
        <h1>{{title}}</h1>
        {{! /post title }}

        <p class="scientificName">{{@config.post.scientificName}}</p>

        
{{@postViewConfig.scientificName}}

Result:

<article class="plant">

    <header>
        <h1>aster</h1>

        <p class="scientificName"></p>