Cannot select pageview!?

[Daniel]

This should be a really simple task, but just like every other task I've attempted in asp.net using telerik it's stumping me for a good hour.

                var pageView = multiPage.findPageViewByID("PageDetails");
                pageView.set_selected(true); 

I've tried using that ^ to select a pageview. I've also tried this:

                var pageView = multiPage.findPageViewByID("PageDetails");
                pageView.select(); 

And I've also tried selecting by index. I have found the multiPage fine in the javascript as I currently have the pageview changing as and when the user clicks a panel bar menu item. For that I have used this:

            var item = args.get_item();
            var newPageView = multiPage.get_pageViews().getPageView(parseInt(item.get_value()));
            if (newPageView)
                newPageView.set_selected(true);

But this doesn't work if I try to adapt it to my method.

Thanks.

EDIT: I've sorted it, had to use the clientID (i.e. "ctl00_MainContent....")