Formatting the column of expanded table

[rajyah]

Good day Splunkers!

What is the correct way to format the column of expanded table? So far I tried this but it didn't work. 😞

 this._tableView = new TableView({
                id:'myTable',
                managerid: 'details-search-manager',
                showPager:false,
                wrap: true,
                drilldown: "none",
                format: {
                "MyField": [ 
                    {
                        "type": "number", 

                        "options": 
                        {
                            "precision": "1"
                        }
                    }
                ]
            }
            });

Is there something I'm missing?