Using the data widget to create copies of all the tiddlers with the title prefix "Day: T", adding the field "custom" set to "Beta"
| title | Output |
[
{
"title": "Day: Thursday",
"text": "Today is Thursday",
"custom": "Beta"
},
{
"title": "Day: Tuesday",
"text": "Today is Tuesday",
"custom": "Beta"
}
]