displaying a image slider using acf and flexslider

I'm trying to display images on a slider in the side bar of

using flex slider and acf ive follwed the gudies on acf and a post on there about this but i seem to be getting no where

the post is http://support.advancedcustomfields.com/forums/topic/carousel-slider-implementation/#post-11869

the acf guide is

http://www.advancedcustomfields.com/resources/field-types/gallery/ under Create a carousel / slider

please help if possible