How to update the trait value

Hello @artf  thanks a lot for a great project, 
I have created a new type, it is similar to regular link, but the link title updates with ajax. Then updates the trait 'linktitle'. The value of it and the canvas do update, but the trait inside "Settings" still shows the initial value and does not changes. 
Part of the code that must update the value:

editor.DomComponents.addType('newLink', {
model: {
    defaults: {
         components: [	
				{
					highlightable: true,
					editable: true,
					selectable: true
				}],
         traits: [
						{
							type: 'text',
							label: 'Url',
							name: 'url',
							value: 'https://',
							changeProp: 0
						},
						{
							type: 'text',
							label: 'Title',
							name: 'linktitle',
							value: 'Link title', //this must be updated
						changeProp: 0
						}
      ]}},
        view:{
          		tagName: 'div',
			init({ model }) {
			this.listenTo(model, 'change:attributes', model => {
	//First attempt	
editor.getSelected().updateTrait('linktitle', {
type: 'text',
label: 'Title 2',
name: 'linktitle',
value: 'AA', //updating the value to AA
changeProp: 0
});
//shows undefined on canvas but only updates the label, need to update the value
//second attempt
this.model.attributes.attributes.title=' BB ';	
//updates the canvas link to BB, but does not update the trait
editor.trigger('component:toggled');
editor.trigger('component:updated');
editor.trigger('component:update:linktitle');
editor.trigger();  
				});
			},
        }
   }
)

Any suggestion how to update the trait value would be helpful.