How to call an attribute from the same model for a validation with ember-cp-validation

is there a way to call an attribute from the same model? Because I want to use an attribute, from model/code.js, to calculate the validator of an other attribute from the same file. I'll show you with example.

//model/code.js
import Ember from 'ember';
import DS from 'ember-data';
import {validator, buildValidations} from 'ember-cp-validations';

const CardValidations = buildValidations(
    {
      cardId: {
            validators: [
                validator('presence', true),
                validator('length', {
                    // here instead of 10, I want to use nbBits
                    max: 10
                       
                }
            ]
        }
    }
);

export default Credential.extend(CardValidations, {
    cardId: DS.attr('string'),
    nbBits: DS.attr('number'),

    displayIdentifier: Ember.computed.alias('cardId'),
});

So as you can see, I want to call nbBits, to have a specific validation for cardId.
Does somebody know the methods or give me a tips? Thank you for your time