issue with typeahead

[ejlocop]

hi, when i tried to customize tagsinput typeahead template. it only shows a blank suggestion, but there is a data when i select them

here's my code

$('elem').tagsinput({
            itemValue:'value',
            itemText:'value',
            typeaheadjs: {
                minLength:3,
                source:sharing.affDatum.ttAdapter(),
                templates: {
                    suggestion: function(data) { // data is an object as returned by suggestion engine
                        var d = data;
                        return  '<div>haha</div>';

                    }
                }
            }
        });

here's the result