sets the initial value for a control
webix.ui({
  padding:20,
  width:400,
  rows:[
    { type:"section", template:"Settings"},
    { view: "switch", value: 1, label:"Light"},
    { view: "switch", value: false, label:"Sound"},
  ]
});
All controls fall into:
In case of multiple-value controls, the property points to the ID of the initially chosen option.
Value of the control may be: