Class active on menu repeater.

Hi guys,

I have a repeater repeating through a group of pages to create a menu and I want to set the page that you're on as active. http://imgur.com/a/yY2KN That is what I'm trying at the moment and I have checked the 2 values and they're both the same however it still doesn't set active at all. Can anyone suggest another way of doing it?

many thanks, Callam.