Rest assured path not able to access element with number in path
<p>In the following (partial)JSON response:</p>

<pre><code>    {
      "costPrices": {
        "3226186": [
          {
            "fromDate": 1420066800000,
            "toDate": null,
            "product": {
</code></pre>

<p>I'm trying to access the value of fromDate like this: </p>

<pre><code>    body("costPrices.3226186[0].fromDate", equalTo(1420066800000L))
</code></pre>

<p>But when it comes to the number in the path expression it fails, is there some way around this? </p>

<p>java.lang.IllegalArgumentException: Invalid JSON expression:
Script1.groovy: 1: unexpected token: 3226186 @ line 1, column 40.</p>