group-property does not work if input-model is generated via ajax

[kiranpvsr]

Region 1 is not actually being rendered as a group but like just an other row.

HTML Code Snippet

<div class="location"
                     isteven-multi-select
                     input-model="locations"
                     output-model="selected_locations"
                     button-label="location"
                     item-label="locations"
                     tick-property="ticked"
                     on-open="get_locations()"
                     group-property="msGroup">
                </div>

Javascript Code Snippet

        result.$promise.then(function (data) {

            for (item in data['result']) {

                d_item = data['result'][item];
                try {

                    if(d_item['msGroup'] == 1) {
                        d_item['msGroup'] = true;
                    }
                    else {
                        d_item['msGroup'] = false;
                    }
                }
                catch (error) {
                    console.log('error', d_item)
                }

            }

            $scope.locations = data['result'];
        });

[kiranpvsr]

Ignore please.