If you want to change the max value for an object (obj) in JavaScript programming, you can achieve this by using JSON. First, you need to convert the obj to a JSON string using the JSON.stringify() method. Once you have the JSON string, you can parse it back into an object using JSON.parse(). In the process, you can modify the max value property in the object. Finally, you can convert the modified object back to a JSON string using JSON.stringify() and update the original object with the new JSON object. By following these steps, you can effectively change the max value for obj in your JavaScript programming project.