If an attribute contains valid JSON then you can refer to the JSON properties of that attribute by specifying a path to that property inside tags using expressions. These expressions support dot and bracket notations and allow to build a path to any value or object inside JSON data.
For example, given an attribute root that has a JSON-value of two items: [{"id": 10, "text": "first item text"}, {"id": 20, "text": "second item text"}] then its properties can be accessed in tags using the following expressions: “{root[0].id}”, “{root[1].text}” and etc.
Note: You can add expressions in the advanced intents.
For more information about adding an express, see Adding an expression.