No checkboxes displayed

[pablobertran]

I've managed to set up the directive, it's all working great. I just need it to show checkboxes, and don't know how to enable them.

This is the directive html:

<multiselect-searchtree
                        multi-select="true"
                        data-input-model="arbol"
                        data-output-model="arbolOut"
                        data-callback="arbolChange(item, selectedItems)"
                        data-select-only-leafs="true"
                        extra-buttons="true"
                        direct-search="true">
                </multiselect-searchtree>

Ideas?

[tiberius-s]

I may be too late here, but I recently came upon this lib in a project and had the same issue. What you need to do is make sure your callback returns true.
In your case:

$scope.arbolChange = function(item, selectedItems){
  //handle the selection here
  return true;
};