Default attribute value to the field of SmartEditor widget

[TokarAndrii]

How can i set a default attribute value to the field of SmartEditor widget as shown on picture

[TokarAndrii]

I have tried such 

_setPresetValue: function () {
    var sw = registry.byId("savePresetValueSwitch");
    this._usePresetValues = sw.checked;

    query('#dijit_form_ValidationTextBox_0').forEach(function(node){

            setTimeout(function(){
                var widget = registry.byNode(node.children[0]);
                widget.set('value', 1);
            }, 300);

},
but i received an error

[RobertScheitlin__GISP]

Can you share a screenshot of the error?

[TokarAndrii · Accepted solution]

question solved, I put my stuff to onOpne function of widget

onOpen: function () {
    if (this._userHasPrivilege === true) {
        //this.fetchDataByName('GroupFilter');
        this._workBeforeCreate();
        this.widgetManager.activateWidget(this);
    }
    if (this.templatePicker) {
        this.templatePicker.update();
    }

    setTimeout(function () {
        var query = document.getElementById("dijit_form_ValidationTextBox_0");
        query.setAttribute('value', '{00000000-0000-0000-0000-000000000000}')
    }, 300);

},