diff --git a/DependencyInjection/Configuration.php b/DependencyInjection/Configuration.php
index 5bd9542..9e267c8 100644
--- a/DependencyInjection/Configuration.php
+++ b/DependencyInjection/Configuration.php
@@ -15,7 +15,7 @@ class Configuration implements ConfigurationInterface
     /**
      * {@inheritDoc}
      */
-    public function getConfigTreeBuilder()
+    public function getConfigTreeBuilder(): TreeBuilder
     {
         $treeBuilder = new TreeBuilder('tetranz_select2_entity');
         $rootNode = $treeBuilder->getRootNode();
diff --git a/DependencyInjection/TetranzSelect2EntityExtension.php b/DependencyInjection/TetranzSelect2EntityExtension.php
index c1cd2a3..e64c73e 100644
--- a/DependencyInjection/TetranzSelect2EntityExtension.php
+++ b/DependencyInjection/TetranzSelect2EntityExtension.php
@@ -17,7 +17,7 @@ class TetranzSelect2EntityExtension extends Extension
     /**
      * {@inheritDoc}
      */
-    public function load(array $configs, ContainerBuilder $container)
+    public function load(array $configs, ContainerBuilder $container): void
     {
         $configuration = new Configuration();
         $config = $this->processConfiguration($configuration, $configs);
diff --git a/Form/DataTransformer/EntitiesToPropertyTransformer.php b/Form/DataTransformer/EntitiesToPropertyTransformer.php
index d6a9fd8..0fdc381 100644
--- a/Form/DataTransformer/EntitiesToPropertyTransformer.php
+++ b/Form/DataTransformer/EntitiesToPropertyTransformer.php
@@ -51,31 +51,28 @@ public function __construct(ObjectManager $em, $class, $textProperty = null, $pr
 
     /**
      * Transform initial entities to array
-     *
-     * @param mixed $entities
-     * @return array
      */
-    public function transform($entities)
+    public function transform(mixed $value): mixed
     {
-        if (empty($entities)) {
+        if (empty($value)) {
             return array();
         }
 
         $data = array();
 
-        foreach ($entities as $entity) {
+        foreach ($value as $entity) {
             $text = is_null($this->textProperty)
                 ? (string) $entity
                 : $this->accessor->getValue($entity, $this->textProperty);
 
             if ($this->em->contains($entity)) {
-                $value = (string) $this->accessor->getValue($entity, $this->primaryKey);
+                $transformed = (string) $this->accessor->getValue($entity, $this->primaryKey);
             } else {
-                $value = $this->newTagPrefix . $text;
+                $transformed = $this->newTagPrefix . $text;
                 $text = $text.$this->newTagText;
             }
 
-            $data[$value] = $text;
+            $data[$transformed] = $text;
         }
 
         return $data;
@@ -83,27 +80,24 @@ public function transform($entities)
 
     /**
      * Transform array to a collection of entities
-     *
-     * @param array $values
-     * @return array
      */
-    public function reverseTransform($values)
+    public function reverseTransform(mixed $value): mixed
     {
-        if (!is_array($values) || empty($values)) {
-            return array();
+        if (!is_array($value) || empty($value)) {
+            return [];
         }
 
         // add new tag entries
-        $newObjects = array();
+        $newObjects = [];
         $tagPrefixLength = strlen($this->newTagPrefix);
-        foreach ($values as $key => $value) {
-            $cleanValue = substr($value, $tagPrefixLength);
-            $valuePrefix = substr($value, 0, $tagPrefixLength);
+        foreach ($value as $key => $v) {
+            $cleanValue = substr($v, $tagPrefixLength);
+            $valuePrefix = substr($v, 0, $tagPrefixLength);
             if ($valuePrefix == $this->newTagPrefix) {
                 $object = new $this->className;
                 $this->accessor->setValue($object, $this->textProperty, $cleanValue);
                 $newObjects[] = $object;
-                unset($values[$key]);
+                unset($value[$key]);
             }
         }
 
@@ -112,12 +106,12 @@ public function reverseTransform($values)
             ->select('entity')
             ->from($this->className, 'entity')
             ->where('entity.'.$this->primaryKey.' IN (:ids)')
-            ->setParameter('ids', $values)
+            ->setParameter('ids', $value)
             ->getQuery()
             ->getResult();
 
           // this will happen if the form submits invalid data
-        if (count($entities) != count($values)) {
+        if (count($entities) != count($value)) {
             throw new TransformationFailedException('One or more id values are invalid');
         }
 
diff --git a/Form/DataTransformer/EntityToPropertyTransformer.php b/Form/DataTransformer/EntityToPropertyTransformer.php
index 72a30a9..23368de 100644
--- a/Form/DataTransformer/EntityToPropertyTransformer.php
+++ b/Form/DataTransformer/EntityToPropertyTransformer.php
@@ -18,19 +18,19 @@
 class EntityToPropertyTransformer implements DataTransformerInterface
 {
     /** @var ObjectManager */
-    protected $em;
+    protected ObjectManager $em;
     /** @var  string */
-    protected $className;
+    protected string $className;
     /** @var  string */
-    protected $textProperty;
+    protected string $textProperty;
     /** @var  string */
-    protected $primaryKey;
+    protected string $primaryKey;
     /** @var string  */
-    protected $newTagPrefix;
+    protected string $newTagPrefix;
     /** @var string  */
-    protected $newTagText;
+    protected string $newTagText;
     /** @var PropertyAccessor */
-    protected $accessor;
+    protected PropertyAccessor $accessor;
 
     /**
      * @param ObjectManager $em
@@ -52,29 +52,26 @@ public function __construct(ObjectManager $em, $class, $textProperty = null, $pr
 
     /**
      * Transform entity to array
-     *
-     * @param mixed $entity
-     * @return array
      */
-    public function transform($entity)
+    public function transform(mixed $value): mixed
     {
-        $data = array();
-        if (empty($entity)) {
+        $data = [];
+        if (empty($value)) {
             return $data;
         }
 
         $text = is_null($this->textProperty)
-            ? (string) $entity
-            : $this->accessor->getValue($entity, $this->textProperty);
+            ? (string) $value
+            : $this->accessor->getValue($value, $this->textProperty);
 
-        if ($this->em->contains($entity)) {
-            $value = (string) $this->accessor->getValue($entity, $this->primaryKey);
+        if ($this->em->contains($value)) {
+            $transformed = (string) $this->accessor->getValue($value, $this->primaryKey);
         } else {
-            $value = $this->newTagPrefix . $text;
+            $transformed = $this->newTagPrefix . $text;
             $text = $text.$this->newTagText;
         }
 
-        $data[$value] = $text;
+        $data[$transformed] = $text;
 
         return $data;
     }
@@ -85,7 +82,7 @@ public function transform($entity)
      * @param string $value
      * @return mixed|null|object
      */
-    public function reverseTransform($value)
+    public function reverseTransform(mixed $value): mixed
     {
         if (empty($value)) {
             return null;
diff --git a/Form/Type/Select2EntityType.php b/Form/Type/Select2EntityType.php
index ad7f8d4..a007f17 100644
--- a/Form/Type/Select2EntityType.php
+++ b/Form/Type/Select2EntityType.php
@@ -45,7 +45,7 @@ public function __construct(ManagerRegistry $registry, RouterInterface $router,
         $this->config = $config;
     }
 
-    public function buildForm(FormBuilderInterface $builder, array $options)
+    public function buildForm(FormBuilderInterface $builder, array $options): void
     {
         // custom object manager for this entity, override the default entity manager ?
         if (isset($options['object_manager'])) {
@@ -97,7 +97,7 @@ public function buildForm(FormBuilderInterface $builder, array $options)
         $builder->addViewTransformer($transformer, true);
     }
 
-    public function finishView(FormView $view, FormInterface $form, array $options)
+    public function finishView(FormView $view, FormInterface $form, array $options): void
     {
         parent::finishView($view, $form, $options);
         // make variables available to the view
@@ -137,7 +137,7 @@ public function finishView(FormView $view, FormInterface $form, array $options)
     /**
      * @param OptionsResolver $resolver
      */
-    public function configureOptions(OptionsResolver $resolver)
+    public function configureOptions(OptionsResolver $resolver): void
     {
         $resolver->setDefaults([
                 'object_manager' => null,
@@ -183,7 +183,7 @@ public function configureOptions(OptionsResolver $resolver)
     /**
      * @return string
      */
-    public function getBlockPrefix()
+    public function getBlockPrefix(): string
     {
         return 'tetranz_select2entity';
     }
diff --git a/Service/AutocompleteService.php b/Service/AutocompleteService.php
index c4ba50a..0c000f5 100644
--- a/Service/AutocompleteService.php
+++ b/Service/AutocompleteService.php
@@ -14,12 +14,12 @@ class AutocompleteService
     /**
      * @var FormFactoryInterface
      */
-    private $formFactory;
+    private FormFactoryInterface $formFactory;
 
     /**
      * @var ManagerRegistry
      */
-    private $doctrine;
+    private ManagerRegistry $doctrine;
 
     /**
      * @param FormFactoryInterface $formFactory
@@ -29,7 +29,7 @@ public function __construct(FormFactoryInterface $formFactory, ManagerRegistry $
     {
         $this->formFactory = $formFactory;
         $this->doctrine = $doctrine;
-    }   
+    }
 
     /**
      * @param Request                  $request
@@ -37,9 +37,9 @@ public function __construct(FormFactoryInterface $formFactory, ManagerRegistry $
      *
      * @return array
      */
-    public function getAutocompleteResults(Request $request, $type)
+    public function getAutocompleteResults(Request $request, $type, $data = null)
     {
-        $form = $this->formFactory->create($type);
+        $form = $this->formFactory->create($type, $data);
         $fieldOptions = $form->get($request->get('field_name'))->getConfig()->getOptions();
 
         /** @var EntityRepository $repo */
@@ -65,10 +65,23 @@ public function getAutocompleteResults(Request $request, $type)
             ->setFirstResult($offset)
         ;
 
+        if ($request->get('exclude') && $exclude = explode(',', $request->get('exclude'))) {
+            if (\count($exclude) > 0) {
+                $resultQb
+                    ->andWhere('e.id NOT IN (:exclude)')
+                    ->setParameter('exclude', $exclude);
+            }
+        }
+
         if (is_callable($fieldOptions['callback'])) {
             $cb = $fieldOptions['callback'];
 
             $cb($countQB, $request);
+            //reset joined select from count
+            $countQB->resetDQLPart('select');
+            $countQB
+                ->addSelect($countQB->expr()->count('e'));
+
             $cb($resultQb, $request);
         }
 
diff --git a/composer.json b/composer.json
index 7a23ddd..542fa3d 100644
--- a/composer.json
+++ b/composer.json
@@ -11,15 +11,15 @@
         }
     ],
     "require": {
-        "php": ">=7.1.3",
+        "php": ">=8.1",
         "doctrine/orm": ">=2.4",
         "twig/twig": ">=2.9",
-        "symfony/property-access": ">=4.0",
-        "symfony/dependency-injection": ">=4.0",
-        "symfony/http-kernel": ">=4.0",
-        "symfony/form": ">=4.0",
-        "symfony/config": ">=4.0",
-        "symfony/routing": ">=4.0"
+        "symfony/property-access": ">=6.4",
+        "symfony/dependency-injection": ">=6.4",
+        "symfony/http-kernel": ">=6.4",
+        "symfony/form": ">=6.4",
+        "symfony/config": ">=6.4",
+        "symfony/routing": ">=6.4"
     },
     "autoload": {
         "psr-4": { "Tetranz\\Select2EntityBundle\\": "" }