Gatsby.js中带有Markdown备注的自定义前题变量

我正在使用Gatsbyjs和NetlifyCMS建立一个网站.我已经开始使用此启动器 https://github.com/AustinGreen/gatsby-starter- netlify-cms ，而我现在正在尝试对其进行自定义.

I am building a website using Gatsbyjs and NetlifyCMS. I've started using this starter https://github.com/AustinGreen/gatsby-starter-netlify-cms, and I am trying to customise it now.

我想在降价文件的开头使用自定义变量，如下所示:

I want to use custom variables in the frontmatter of a markdown file like this:

---
templateKey: mirror
nazev: Černobílá
title: Black and White
cena: '2700'
price: '108'
thumbnail: /img/img_1659.jpeg
---

我想使用GraphQL访问此数据.我使用gatsby-source-filesystem和gatsby-transform-remark.这是我的查询:

I want to acess this data with GraphQL. I use gatsby-source-filesystem and gatsby-transform-remark. This is my query:

  {
  allMarkdownRemark {
    edges {
      node {
        frontmatter {
          templateKey
          nazev
          title
          cena
          price
        }
      }
    }
  }
}

我无法让GraphQL读取我自己的变量，它只能识别title和templateKey(那些已经在启动程序中使用的变量).我收到此错误:

I can't get the GraphQL to read my own variables, it recognises only title and templateKey (those, that were already used in the starter). I get this error:

{
  "errors": [
    {
      "message": "Cannot query field \"nazev\" on type \"frontmatter_2\".",
      "locations": [
        {
          "line": 7,
          "column": 11
        }
      ]
    },
    {
      "message": "Cannot query field \"cena\" on type \"frontmatter_2\".",
      "locations": [
        {
          "line": 9,
          "column": 11
        }
      ]
    },
    {
      "message": "Cannot query field \"price\" on type \"frontmatter_2\". Did you mean \"pricing\"?",
      "locations": [
        {
          "line": 10,
          "column": 11
        }
      ]
    }
  ]
}

我已经搜索了几天，但什么也没找到.有人可以帮我吗?

I've searched for days, but found nothing. Would someone help me please?