yii2-formwizard change model after select2 selection - yii2

Question

I'm trying to implement a multiple models form using the form-wizard widget, with Profile as main model and few others as linked ones. When I select the entity type field for the main model, I would like to change the linked model for the next step, basing on the value of entity type field.
I have tried with this code:
Create Form Code
$modelUrlReletedModelsCreate = Profile::urlRelatedModelCreate();
$urlLinkedProfile = Url::to(['create']);
echo FormWizard::widget([
'formOptions'=>[
'id'=>'profile_form',
'enableClientValidation'=>true,
'enableAjaxValidation'=>true,
'validationUrl' => Url::to(['profile-models-validation'])
],
'theme' => FormWizard::THEME_MATERIAL_V,
'steps' => [
//step 1
[
'model' => $model,
'title' => \Yii::t('app', 'Profile'),
'fieldConfig' => [
'only' => ['entity_type_id', 'profile_type_id'],
'entity_type_id' => [
'widget' => Select2::class,
'options' => [
'data' => EntityType::arrayNamesList(),
'options' => ['placeholder' => \Yii::t('app','Select an element')],
'pluginEvents' => ['select2:select'=>'function(e){;'
. 'var type = $("#pr-ty-sel").val();'
. 'var profile= "'.($model->profile_id ? : "no").'";'
. '$.ajax({ method: "GET",'
. 'url:"'.$urlLinkedProfile.'",'
. 'data:{ entity_text : e.params.data.text,'
. 'entity_id : e.params.data.id,'
. 'profile_type_id : type,'
. 'profile_id : profile},'
. 'success: function(data){'
. '$("#profile_form").html(data);'
. '}'
. '});}'],
],
],
'profile_type_id' =>[
'widget' => Select2::class,
'options' => [
'data' => \app\models\ProfileType::arrayNamesList(),
'options' => ['placeholder' => \Yii::t('app','Select an element'),'id'=>'pr-ty-sel'],
],
]
],
'description' => \Yii::t('app', 'Add Profile Type Data'),
'formInfoText' => \Yii::t('app', 'Fill all fields'),
],
//step 2 I want ot change here $linkedModel
[
'model' => [$model,$linkedModel],
'title' => \Yii::t('app', 'Personal Data'),
'description' => \Yii::t('app', 'Insert Personal Data'),
],
]
]);
Controller Action Create Code
public function actionCreate($profileId = NULL)
{
if($profileId AND $profileId !== 'no'){
$model = $this->findModel($profileId);
}else{
$model = new Profile();
}
$profileLinkedModel = new ProfilePrivate();
$renderMethod = 'render';
if (Yii::$app->request->isAjax) {
$entityText = \Yii::$app->request->get('entity_text');
$entity_id = \Yii::$app->request->get('entity_id');
$profileTypeId = \Yii::$app->request->get('profile_type_id');
$profileId = \Yii::$app->request->get('profile_id');
//Utility function to clean the entity text (remove number and special characters)
$entityTextCleaned = \app\components\Utility::cleanString($entityText);
if ($entityTextCleaned == 'private') {
$profileLinkedModel = new ProfilePrivate();
} elseif ($entityText == 'company') {
$profileLinkedModel = new ProfileCompany();
} else {
//#TODO
return FALSE;
}
$model->entity_type_id = $entity_id;
$model->profile_type_id = $profileTypeId;
$profileLinkedModel->profile_id = $model->profile_id;
Yii::$app->response->format = Response::FORMAT_JSON;
$renderMethod = 'renderAjax';
}
//extra table field used to enable custom rule in model
$model->createFullProfile = TRUE;
if ($model->load(Yii::$app->request->post())) {
return $this->redirect(['view', 'id' => $model->profile_id]);
}
return $this->$renderMethod('create', [
'model' => $model,
'profileLinkedModel' => $profileLinkedModel,
]);
}
When I select a field for entity type field, the server runs the ajax request on select event, but when it ends the other form field is not more selectable. So, in other words, after the ajax request I'm unable to select the profile type field. If I try to select the profile type field before the entity type field I can go to next step, but load always the default model.