demo-process-models/examples/1-basic-concepts/understanding-data-part-1/simple-user-task-schema.json

{
  "title": "Date",
  "description": "Create a date field with a date picker (delivery_date).",
  "type": "object",
  "required": [
    "firstName"
  ],
  "properties": {
    "firstName": {
      "type": "string",
      "title": "First Name",
      "default": "Chuck"
    },
    "delivery_date": {
      "type": "string",
      "format": "date",
      "title": "Preferred Delivery Date",
      "validationErrorMessage": "Date must be today's date or later"
    }
  }
}