install.json

{
  "resources": {
    "body": [
      {
        "type": "style",
        "src": "./source/app.css"
      },
      {
        "type": "script",
        "src": "./source/app.js"
      }
    ]
  },
  "preview": {
    "handlers": [
      {
        "options": [
          "_default"
        ],
        "execute": "INSTALL_SCOPE.setOptions(INSTALL_OPTIONS)"
      }
    ]
  },
  "options":{
    "properties": {
      "policyText": {
        "title": "Text for the policy",
        "type": "string",
        "format": "textarea",
        "default": "By using this website, you agree that we and our partners may set cookies for purposes such as customising content and advertising.",
        "order": 1
      },
      "acceptButton": {
        "title": "Agree Button Text",
        "type": "string",
        "default": "I Understand",
        "order": 2
      },
      "opacity": {
        "default": 70,
        "title": "Opacity",
        "type": "number",
        "format": "slider",
        "minimum": 60,
        "maximum": 100,
        "spep": 1,
        "order": 3
      }
    }
  }
}