Any other way to listen the traits option changes

HI, I added the code of listening to the changes made when the user selects the values in the dropdown. but I need to listen to the changes in some other places in the code.

 comps.addType('input', {
      model: defaultModel.extend({
        defaults: Object.assign({}, defaultModel.prototype.defaults, {
          draggable: '*',
          droppable: false,
          traits: [
            { name: 'name', label: 'Name' },
            { name: 'placeholder', label: 'Placeholder' },
            {
              label: 'Type',
              type: 'select',
              name: 'mytype',
              changeProp: 1,
              options: [{ value: 'text', name: 'Text' },
              { value: 'email', name: 'Email' },
              { value: 'password', name: 'Password' },
              { value: 'number', name: 'Number' }]
            },
            { type: 'checkbox', name: 'required', label: 'Required' }
          ]
        }),
        init() {
          this.listenTo(this, 'change:mytype', this.mytype);
        },
        mytype() {
          alert('entity called');
        }

      },
        {
          isComponent: function (el) {
            console.log('ram iscomponent for radio tagname and ttype', el.tagName, '  ---  ', el);
            if (el.tagName === 'INPUT') {
              return {
                type: 'input'
              };
            }
          },
        }),

      // Define the View
      view: defaultType.view,
    });

In the above change working fine. but I need to listen to the changes in another place.

can anyone please help me