diff --git a/src/Engine.php b/src/Engine.php
index f71d2b8..b5f7264 100644
--- a/src/Engine.php
+++ b/src/Engine.php
@@ -208,7 +208,8 @@ class Engine
             }
 
             if(isset($this->variables[$option->getId()])) {
-                $option->setValue($this->variables[$option->getId()]);
+                $option->setRawValue($this->variables[$option->getId()]);
+                $option->processValue();
             }
         }
 
diff --git a/tests/Calc/OptionsRemoveTest.php b/tests/Calc/OptionsRemoveTest.php
index bb42e8d..562f821 100644
--- a/tests/Calc/OptionsRemoveTest.php
+++ b/tests/Calc/OptionsRemoveTest.php
@@ -53,7 +53,7 @@ class OptionsRemoveTest extends \PHPUnit_Framework_TestCase
         $this->engine->setVariables(['gebyn' => 2]);
         $this->engine->calc('test1');
 
-        $this->assertEquals(2, $article->getOptionById('gebyn')->getValue());
+        $this->assertEquals("Nein", $article->getOptionById('gebyn')->getValue());
 
         $option = $article->getOptionById('gebwert');