Twig variables in slim frame work - php

Question

I want to pass data from my controller to the twig view.
this is my controller code:
class HomeController extends Controller
{
public function index($request, $response)
{
return $this->view->render($response, 'home.twig');
}
public function numbers($request, $response){
return $this->view->render($response, 'home.twig', ['test' => '1221']);
}
}
This is my home.twig code:
{% block content %}
<div id="wrapper">
<div class="content-wrapper container">
<div class="row">
<div class="col-sm-12">
<div class="page-title">
<h1>Numbers for {{ test }} <small></small></h1>
<ol class="breadcrumb">
<li><i class="fa fa-home"></i></li>
<li class="active">Data</li>
</ol>
</div>
</div>
</div><!-- end .page title-->
<div class="row">
<div class="col-sm-12">
{{ abs }}
</div>
</div>
</div>
</div>
{% endblock %}
The value 1221 that is set under test is not shown on the page when rendered.
What am I missing?