Recover hybrid page Alfresco Share

I've created a new page Aikau, but I changed the XML file and the rendered page content between the standard Share header and footer disappeared.

In this page, I want the arguments of the query string, so I write this code:

page.get.desc.xml:

<webscript>
    <shortname>My New Page</shortname>
    <url>/hdp/ws/my-new-page</url>
    <authentication>user</authentication>
</webscript>

page.get.js:

function main ()
{
    // Get the args
    var fileProp = args["test"];

    model.temp = fileProp;
}

main();

page.get.html.ftl:

Test arg: ${temp}

I have to put /hdp/ws/my-new-page in the XML file to write the content of FTL file in this page... But why did the header and footer of the Alfresco template disappeared ? hdp serves for this purpose. And if I don't put the URL like that on the XML, the page appears with the template.

What is wrong in my code? Or how can I recover the template?