setValue

sets a new value for the component

void setValue(number value, [any config] );

value	number	a new value for the button
config	any	operation config

webix.ui({
    view:"counter",
    id:"counter1"
    label:"First age"
});
$$('counter1').setValue(30);
$$('counter1').getValue(); // -> 30

Details

The second parameter can be of any type (from a string to an object). config will be passed to the onChange event as the last parameter.