{ 
  "tasks": { 
      "items" :  {
          "description": {
            "ui:widget": "textarea",
            "ui:help": "Enter task description",
            "ui:placeholder": "Task description"
          } ,
        "start_date": {
            "ui:widget": "date",
            "ui:help": "The date and time you started working on it"
        } 
      }   
  }
}