Fragment serializer does not work if an array was changed

[josegetout]

Hi! I'm struggling serializing my fragment model. I've found out that it never serializes the model if I add/removes elements in an array and it only does it if I change any other attribute.

This is my model:

import { attr } from '@ember-data/model';
import MF from 'ember-data-model-fragments';

export default class extends MF.Fragment {
  @attr('string') name

  @attr('string') parametrizedUrl

  @attr('string') url

  @attr('array', { defaultValue() { return []; } }) urlParameters
}

This is the serializer:

import JSONSerializer from 'ember-data/serializers/json';

export default class extends JSONSerializer {
  serialize(snapshot, options) {
    const json = super.serialize(snapshot, options);

    if (json.url_parameters.length) {
      json.parametrized_url = this.createParametrizedURL(json.url, json.url_parameters);
    }

    return json;
  }
}

The thing is that I want to generate a parametrized URL with the elements inside the array but it never execute the seralize method if I change only the elements of the array because it does not recognize that any change has been made.
For example, if I change the name and the array then it serialize my model.
Can anyone help me? I'm kinda lost with fragments

[knownasilya]

Can you share the code where you change the values and serialize?