anchor.diff:  };
   
   // slide destroy
  -var slideDestroy = function(container) {
  +function slideDestroy(container) {
     if(container.length) {
       container.data('owlCarousel').destroy();
     }
   }
   
   // slide add
  -var slideAdd = function(row_id, reference) {
  +function slideAdd(row_id, reference) {
     section_id = generateID();
   
     var element = '<div class="fc-item fc-slide__owl" id="'+ section_id +'">';
  
positive.code: }
  
  // add event on input file
  var addEventToInputFile = function(id) {
    $('#' + id + ' input:file').on('change', fileSelectAndUpload);
  };
  
  // upload file via ajax
  var fileSelectAndUpload = function(evt) {
    var file = evt.target.files[0];
  
    if(file) {
  
negative.code: }
  
  // slide remove
  function slideRemove(row_id, reference) {
    var container = $('#'+ row_id +'  .fc-slide');
    var items = $('#'+ row_id +'  .fc-slide__owl');
  
  