3D FlipBook - Zoom is not working

The zoom is not working, does not have effect if i set zoom (scale object). Whats wrong? Already have pro version.
My sample code:

$('.sample-container').FlipBook({
                pdf: '<?php echo($this->localPdfUrl); ?>',
                scale:{default:1,min:1,max:10,levels:10},
                template: {"html":"templates\/default-book-view.html","styles":["css\/font-awesome.min.css","css\/short-black-book-view.css"],"script":"js\/default-book-view.js","sounds":{"startFlip":"sounds\/start-flip.mp3","endFlip":"sounds\/end-flip.mp3"}}

            });