How to put the version on exported pdf?

[Eva Maia]

I want to have the version of each page in the pdf when I export some confluence page. 

The version of the page appears on it, in confluence, because I put in the page layout the following code:

<div id="main-content" class="wiki-content">
Page version: <strong>${confPage.version} ${confPage.versionComment}</strong>
$body
</div>

However if I export the page to pdf the version does not appear. Can you help me?