diff --git a/Classes/ViewHelpers/Controller/FluidJsonController.php b/Classes/ViewHelpers/Controller/FluidJsonController.php
index 2f9a037..46a4a2b 100644
--- a/Classes/ViewHelpers/Controller/FluidJsonController.php
+++ b/Classes/ViewHelpers/Controller/FluidJsonController.php
@@ -11,6 +11,7 @@ use Doctrine\ORM\Query\Parameter;
 use Neos\Flow\Annotations as Flow;
 use Neos\Flow\Persistence\Doctrine\Query;
 use Neos\FluidAdaptor\Core\Widget\AbstractWidgetController;
+use Neos\FluidAdaptor\View\TemplateView;
 use Neos\Utility\TypeHandling;
 
 class FluidJsonController extends AbstractWidgetController
@@ -80,6 +81,12 @@ class FluidJsonController extends AbstractWidgetController
     public function indexAction()
     {
         $this->view->assign('entityClassName', $this->query->getType());
+        if ($this->view instanceof TemplateView) {
+            $renderingContext = $this->request
+                ->getInternalArgument('__widgetContext')
+                ->getViewHelperChildNodeRenderingContext();
+            $this->view->assignMultiple($renderingContext->getVariableProvider()->getAll());
+        }
     }
 
     /**
diff --git a/Classes/ViewHelpers/FluidJsonViewHelper.php b/Classes/ViewHelpers/FluidJsonViewHelper.php
index 717c226..662233a 100644
--- a/Classes/ViewHelpers/FluidJsonViewHelper.php
+++ b/Classes/ViewHelpers/FluidJsonViewHelper.php
@@ -5,7 +5,7 @@ declare(strict_types=1);
 namespace DigiComp\FluidJsonViews\ViewHelpers;
 
 use DigiComp\FluidJsonViews\ViewHelpers\Controller\FluidJsonController;
-use DigiComp\FluidRenderFunctions\InvokeRenderFunctionInterface;
+use DigiComp\FluidRenderFunctions\ViewHelpers\Traits\ValidateRenderFunctionTrait;
 use Neos\Flow\Annotations as Flow;
 use Neos\Flow\Mvc\Exception\InfiniteLoopException;
 use Neos\Flow\Mvc\Exception\StopActionException;
@@ -16,6 +16,8 @@ use Neos\FluidAdaptor\Core\Widget\Exception\MissingControllerException;
 
 class FluidJsonViewHelper extends AbstractWidgetViewHelper
 {
+    use ValidateRenderFunctionTrait;
+
     /**
      * @inheritDoc
      * @Flow\Inject
@@ -38,7 +40,7 @@ class FluidJsonViewHelper extends AbstractWidgetViewHelper
         $this->registerArgument('objects', QueryResult::class, 'Objects to show in table.', true);
         $this->registerArgument(
             'renderFunction',
-            InvokeRenderFunctionInterface::class,
+            'string',
             'callabe to use to render single object',
             true
         );
@@ -51,6 +53,12 @@ class FluidJsonViewHelper extends AbstractWidgetViewHelper
         );
     }
 
+    public function validateArguments()
+    {
+        parent::validateArguments();
+        $this->validateRenderFunctionArgument('renderFunction');
+    }
+
     /**
      * @throws InfiniteLoopException
      * @throws InvalidControllerException
diff --git a/README.md b/README.md
index 6d3229b..60167a1 100644
--- a/README.md
+++ b/README.md
@@ -7,7 +7,7 @@ Let me provide you an example:
 <rf:registerRenderFunction as="renderTag">
     {subject.name}
 </rf:registerRenderFunction>
-<fj:fluidJson objects="{tags}" renderFunction="{renderTag}" searchProperties="{0: 'name'}">
+<fj:fluidJson objects="{tags}" renderFunction="renderTag" searchProperties="{0: 'name'}">
     <a href="{dataUri}">jsonView</a>
 </fj:fluidJson>
 ```
diff --git a/Resources/Private/Templates/Tests/Functional/Fixtures/Test/Index.html b/Resources/Private/Templates/Tests/Functional/Fixtures/Test/Index.html
index 739acd0..529268a 100644
--- a/Resources/Private/Templates/Tests/Functional/Fixtures/Test/Index.html
+++ b/Resources/Private/Templates/Tests/Functional/Fixtures/Test/Index.html
@@ -3,6 +3,6 @@
 <rf:registerRenderFunction as="renderTag">
     {subject.name}
 </rf:registerRenderFunction>
-<fj:fluidJson objects="{tags}" renderFunction="{renderTag}" searchProperties="{0: 'name'}">
+<fj:fluidJson objects="{tags}" renderFunction="renderTag" searchProperties="{0: 'name'}">
     <a href="{dataUri}">jsonView</a>
 </fj:fluidJson>