Hi I'd like to know if there was a way to show the # of views for the content-detail page on the videos?

I've been trying to figure it out, but I'm not getting anything. I used this code:

<?fml version="1.0" ?>
<fx:single-element datasource="visitor">
<fx:content-numberOfViews/>
</fx:single-element>

and i got an error:

Required url part {QueryType} is missing.

if anyone can help, much appreciated. thanks!