XBMC+Audirvana (adding a external player)

Hi, I tried to use an external player and I followed the guide, adding a playercorefactory.xml under userdata:

<playercorefactory>
<players>
<player name="audirvana" type="ExternalPlayer" audio="true" video="false">
<filename>/Applications/Audirvana Plus.app</filename>
<args>"{1}" /fullscreen /close</args>
<hidexbmc>false</hidexbmc>
<hideconsole>false</hideconsole>
<warpcursor>none</warpcursor>
</player>
</players>
</playercorefactory>

But it didn't work, Am I missing something?

Regards