[VKS]

// call with name and value
myCheckboxGroup.setValue('cb-col-1', true);
// call with an array of boolean values
myCheckboxGroup.setValue([true, false, false]);
// call with an object literal specifying item:value pairs
myCheckboxGroup.setValue({
    'cb-col-2': false,
    'cb-col-3': true
});
// use comma separated string to set items with name to true (checked)
myCheckboxGroup.setValue('cb-col-1,cb-col-3');