diff --git a/src/Method/FormContext.php b/src/Method/FormContext.php
index 4c219c3..3e9075e 100644
--- a/src/Method/FormContext.php
+++ b/src/Method/FormContext.php
@@ -29,12 +29,19 @@ class FormContext implements FormContextInterface
 
     protected array $formContextCatchedMethods = [ 'POST', 'PUT', 'PATCH', 'DELETE', ];
 
+    protected array $formConstructorProperties = [];
+
     public ? ResponseInterface $formContextResponse = null;
 
     public function __construct(
         public ServerRequestInterface $formContextRequest,
         public readonly ? string $formName = null
     ) {
+        # From constructor
+        $reflection = new \ReflectionClass($this);
+
+        $this->formConstructorProperties = array_map(fn($e) => strtolower($e->getName()), array_filter($reflection->getConstructor()->getParameters(), fn($e) => $e->isPromoted()));
+
         $this->formContextValues = $formContextRequest->getParsedBody() ?: [];
 
         if ( ! $this->formContextValues ) {
@@ -194,7 +201,7 @@ class FormContext implements FormContextInterface
         # Skipping overrides of this particular class vars as a security measure
         static $skipping = array_keys(array_change_key_case(get_class_vars(FormContext::class), CASE_LOWER));
 
-        return ! in_array(strtolower($property), $skipping) && property_exists($this, $property);
+        return ! in_array(strtolower($property), array_merge($skipping, $this->formConstructorProperties)) && property_exists($this, $property);
     }
 
     protected function definedProperty(string $property) : bool
@@ -206,7 +213,7 @@ class FormContext implements FormContextInterface
     {
         $cast = fn($e) => match(true) {
             is_null($value) => null,
-            enum_exists($e) => $e::tryFrom($value) ?? throw new \InvalidArgumentException(sprintf("Field '\$$property' awaiting values : '%s'.", implode("', '", array_map(fn($e) => $e->value, $e::cases())))),
+            enum_exists($e) => ( $value instanceof \BackedEnum ? $value : $e::tryFrom($value) ) ?? throw new \InvalidArgumentException(sprintf("Field '\$$property' awaiting values : '%s'.", implode("', '", array_map(fn($e) => $e->value, $e::cases())))),
             function_exists($e) => $e($value),
             class_exists($e) => new $e($value),
             interface_exists($e) => throw new \InvalidArgumentException("There is no way provided to match an interface object yet."),