diff --git a/README.txt b/README.txt
old mode 100644
new mode 100755
diff --git a/field_config_cardinality.info.yml b/field_config_cardinality.info.yml
old mode 100644
new mode 100755
diff --git a/field_config_cardinality.module b/field_config_cardinality.module
old mode 100644
new mode 100755
index b3a8818..dc3e18f
--- a/field_config_cardinality.module
+++ b/field_config_cardinality.module
@@ -1,10 +1,17 @@
 <?php
 
-use Drupal\Core\Form\ConfigFormBase;
+/**
+ * @file
+ * Field_config_cardinality.module.
+ */
+
 use Drupal\Core\Form\FormStateInterface;
 use Drupal\Core\Field\FieldStorageDefinitionInterface;
 
-function field_config_cardinality_form_alter(&$form, \Drupal\Core\Form\FormStateInterface $form_state, $form_id) {
+/**
+ * Implements hook_form_alter().
+ */
+function field_config_cardinality_form_alter(&$form, FormStateInterface $form_state, $form_id) {
   if ($form_id == 'field_config_edit_form') {
     $field_config = \Drupal::request()->attributes->get('field_config');
     $field_name = $field_config->getName();
@@ -20,11 +27,13 @@ function field_config_cardinality_form_alter(&$form, \Drupal\Core\Form\FormState
       '#parents' => [],
       '#type' => 'fieldset',
       '#title' => t('Allowed number of values (Cardinality Instance)'),
-      '#attributes' => ['class' => [
-        'container-inline',
-        'fieldgroup',
-        'form-composite'
-      ]],
+      '#attributes' => [
+        'class' => [
+          'container-inline',
+          'fieldgroup',
+          'form-composite',
+        ],
+      ],
     ];
 
     $options = [
@@ -44,31 +53,33 @@ function field_config_cardinality_form_alter(&$form, \Drupal\Core\Form\FormState
       '#default_value' => ($cardinality_config == FieldStorageDefinitionInterface::CARDINALITY_UNLIMITED) ? FieldStorageDefinitionInterface::CARDINALITY_UNLIMITED : 'number',
     ];
 
-    $max = ($cardinality != -1) ? $cardinality : true;
+    $max = ($cardinality != -1) ? $cardinality : TRUE;
     $form['cardinality_container']['cardinality_number'] = [
       '#type' => 'number',
       '#default_value' => $cardinality_config != FieldStorageDefinitionInterface::CARDINALITY_UNLIMITED ? $cardinality_config : 1,
       '#min' => 1,
       '#max' => $max,
       '#title' => t('Limit'),
-      '#description' => t('Max number allowed: ') . (($cardinality != -1) ? $cardinality : t('Unlimited')),
+      '#description' => t('Max number allowed:') . (($cardinality != -1) ? $cardinality : t('Unlimited')),
       '#title_display' => 'invisible',
       '#size' => 2,
       '#states' => [
         'visible' => [
-         ':input[name="cardinality"]' => ['value' => 'number'],
+          ':input[name="cardinality"]' => ['value' => 'number'],
         ],
         'disabled' => [
-         ':input[name="cardinality"]' => ['value' => FieldStorageDefinitionInterface::CARDINALITY_UNLIMITED],
+          ':input[name="cardinality"]' => ['value' => FieldStorageDefinitionInterface::CARDINALITY_UNLIMITED],
         ],
       ],
     ];
 
-
-    $form['actions']['submit']['#submit'][]  = 'field_config_cardinality_submit';
+    $form['actions']['submit']['#submit'][] = 'field_config_cardinality_submit';
   }
 }
 
+/**
+ * Implements hook_submit().
+ */
 function field_config_cardinality_submit($form, FormStateInterface $form_state) {
   if ($form_state->getValue('cardinality') === 'number' && $form_state->getValue('cardinality_number')) {
     $cardinality_config = $form_state->getValue('cardinality_number');
@@ -84,21 +95,24 @@ function field_config_cardinality_submit($form, FormStateInterface $form_state)
   }
 }
 
-function field_config_cardinality_field_widget_form_alter(&$element, \Drupal\Core\Form\FormStateInterface $form_state, $context) {
+/**
+ * Implemets hook_form_alter().
+ */
+function field_config_cardinality_field_widget_form_alter(&$element, FormStateInterface $form_state, $context) {
   // Add a css class to widget form elements for all fields of type mytype.
   $field_definition = $context['items']->getFieldDefinition();
-  if (method_exists($field_definition,'getOriginalId')) {
+  if (method_exists($field_definition, 'getOriginalId')) {
     $config = \Drupal::config('field.field.' . $field_definition->getOriginalId());
     if (!empty($config->get('cardinality_config')) && $config->get('cardinality_config') >= 1) {
-      foreach($element as $key => $value) {
-        if (is_numeric($key) && $key > $config->get('cardinality_config')-1)  {
+      foreach ($element as $key => $value) {
+        if (is_numeric($key) && $key > $config->get('cardinality_config') - 1) {
           unset($element[$key]);
         }
       }
 
     }
 
-    if ($element['#max_delta'] >= $config->get('cardinality_config')-1) {
+    if ($element['#max_delta'] >= $config->get('cardinality_config') - 1) {
       unset($element['add_more']);
     }
   }