setFieldValue

   brixxApi.setFieldValue("myControlId", "Hello World!");

   let myText = "Hello World!";
   brixxApi.setFieldValue("myControlId", myText);

   brixxApi.setFieldValue("myDateControl", "2019-01-31"); //This is the format, you would get by getFieldValue
   brixxApi.setFieldValue("myDateControl", new Date()); //This will set todays date.
   brixxApi.setFieldValue("myDateControl", new moment().add(1, "month")); // you can use moment to set calculated dates. See https://momentjs.com/ for more details and examples

   brixxApi.setFieldValue("myCalendarControl", "2019-01-31");

   //resources will delete all and set a new array of resources
   brixxApi.setFieldValue("myCalendarControl.resources", [ 
   {
       id: 1,
       title: "Room A",
   },
   {
       id: 1,
       title: "Room B",
   }]);

   //resource will add a single resource
   brixxApi.setFieldValue("myCalendarControl.resource", { 
       id: 1,
       title: "Room A",
   });