BSP - ADD Meta Tag for IE10 Compatibility

Hello,

we are trying to add a meta tag to the head section of our BSP pages in order to enable the compatibility mode in IE 10/11.

We have tried adding the meta tag by using the htmlb:documenthead element, as it was suggested in another post (http://scn.sap.com/thread/630666).

This is one of our BSPs:

<htmlb:content design="design2003" >
   <htmlb:document>
     <htmlb:documentHead>
       <meta name="prova" http-equiv="X-UA-Compatible" content="IE=5" />
     </htmlb:documentHead>
     <htmlb:documentBody>
       <htmlb:form>
         .....
       </htmlb:form>
     </htmlb:documentBody>
   </htmlb:document>
</htmlb:content>

Unfortunately, we aren't able to find the META tag by looking at the HTML source code of the rendered BSP page.

Does someone have any idea on how to make it work?

Thanks,

Simone