aniamtionLoop not working in Flexslider -

i have slider of 4 slides should have infinite loop, when reach last 1 continues slide 1, @ moment slides way first, thought animationloop: true doesn't:

var children_slides = $('.flexslider_children').flexslider({   slideshow: false, // remove animations   controlnav : false, // remove controls    animation: "fade",    directionnav: true,             //boolean: create navigation previous/next navigation? (true/false)     animationspeed: 1000  });   $('.flexslider').flexslider({     slideshow: false, // remove animations   pauseonhover : true,    animation: "slide",     itemwidth: 244,      animationloop:true,   animationspeed: 1000,   slideshowspeed: 5000,   initdelay: 3000,   manualcontrols: ".flex-control-nav li a",   // call update_children_slides itterates through children slides    'before' : function(slider){ // hijack flexslider     update_children_slides(slider.animatingto);   }    });  

any ideas wrong? thanks!

if remove string

itemwidth: 244,

animationloop work