diff --git a/src/ServiceProvider.php b/src/ServiceProvider.php
index 43246ad..bea0c4f 100644
--- a/src/ServiceProvider.php
+++ b/src/ServiceProvider.php
@@ -12,7 +12,7 @@ public function boot()
     {
         Validator::extend('simple_captcha', function($attribute, $value, $parameters)
         {
-            return $value == SimpleCaptcha::getAnswer();
+            return $value == SimpleCaptcha::getAnswer($attribute);
         },'Invalid captcha answer');
     }
 
diff --git a/src/SimpleCaptcha.php b/src/SimpleCaptcha.php
index 4583645..3d40fef 100644
--- a/src/SimpleCaptcha.php
+++ b/src/SimpleCaptcha.php
@@ -8,8 +8,6 @@ class SimpleCaptcha{
     private $num2;
     private $actionNumber;
     private $arr;
-    private $sessionKey = '_simple_captcha';
-    
 
     private function generate()
     {
@@ -61,17 +59,15 @@ private function multiplication($num1, $num2)
 
 
 
-    public static function getQuestion()
+    public static function getQuestion($sessionKey)
     {
-        $instance = new self();
-        Session::put($instance->sessionKey,$instance->generate());
+        Session::put($sessionKey, $instance->generate());
 
-        return Session::get($instance->sessionKey)['question'];
+        return Session::get($sessionKey)['question'];
     }
 
-    public static function getAnswer()
+    public static function getAnswer($sessionKey)
     {
-        $instance = new self();
-        return Session::get($instance->sessionKey)['answer'];
+        return Session::get($sessionKey)['answer'];
     }
 }
diff --git a/src/helpers.php b/src/helpers.php
index f7fdbbe..5664ce6 100644
--- a/src/helpers.php
+++ b/src/helpers.php
@@ -7,7 +7,7 @@ function getCaptchaQuestion(){
 }
 
 function getCaptchaBox($inputBoxName="_answer"){
-  $html= '<div style="display: flex;align-items: center;font-weight: 600;"><div>'.SimpleCaptcha::getQuestion().'</div>';
+  $html= '<div style="display: flex;align-items: center;font-weight: 600;"><div>'.SimpleCaptcha::getQuestion($inputBoxName).'</div>';
   $html .='<div style="margin-left:10px"><input name="'.$inputBoxName.'" type="number" style="width:60px"></div></div>';
   return $html;
-}
\ No newline at end of file
+}