Question How can I modify values in a Json file?

[Go Fast]

My Json file looks like this:

{

"TotalItemsTraded": {

"TotalKeys": 0

}

 

}

 

Json is called: 'TotalSold.json'

 

How can I update it's value? I'm trying to add an integer to 'TotalKeys' (Another function is calculating everything and im just trying to update the json file value)

[Dr. McKay]

let sold = JSON.parse(require('fs').readFileSync('TotalSold.json').toString('utf8'));

sold.TotalItemsTraded.TotalKeys += something;

require('fs').writeFileSync('TotalSold.json', JSON.stringify(sold, undefined, "\t"));