title: Can't access array element after calling helper (Handlebars)
body: <p>I've registered this helper on my app file:</p>
  
  <pre><code>hbs.registerHelper('if_greater', (a, b, opts) =&gt; {
      if (a &gt;= b) return opts.fn(this);
      return opts.inverse(this);
  });
  </code></pre>
  
  <p>Then, on my hbs file:</p>
  
  <pre><code>{{#if_greater 20 occurrences}}
       &lt;tr class="danger"&gt;
           &lt;td&gt;{{this.date}}&lt;/td&gt;
           &lt;td&gt;{{this.serial}}&lt;/td&gt;
           &lt;td&gt;{{this.operator}}&lt;/td&gt;
           &lt;td&gt;{{this.vehicle}}&lt;/td&gt;
           &lt;td&gt;{{this.stop}}&lt;/td&gt;
           &lt;td&gt;{{this.line}}&lt;/td&gt;
           &lt;td&gt;{{this.zone}}&lt;/td&gt;
           &lt;td&gt;{{this.occurrences}}&lt;/td&gt;
           &lt;td&gt;{{this.encrypted}}&lt;/td&gt;
       &lt;/tr&gt;
  {{/if_greater}}
  </code></pre>
  
  <p>However, <code>this.date</code> doesn't output anything, neither does calling <code>date</code>. I can output it if I don't call my helper. What's wrong in the helper?</p>