I am trying to populate a 'suggest' fieldtype with the titles of the pages in the site. 1.products is the first page on the site containing multiple subpages. YAML is as follows:

product_type:
    type: suggest
    max_files: 1
    display: Product Type
    localizable: true
    content:
      folder: products
      label: title
      value: title
      type: pages

But the field in the CMS is not getting populated with anything.

Any ideas what I'm doing wrong?