Ng Model无法使用ng-bind-html

Question

这是我的HTML

<div class="col-sm-3">
    <div class="form-group ">
        <label class="control-label col-md-12">Branch of Service</label>
        <div class="col-md-12"  ng-bind-html="branch_of_service" > </div>
        <!--<div class="col-md-9" > </div>-->
    </div>
</div>

这是用于角度JS的控制器

$scope.changeBranchOfService= function(element) {
    //console.log($(element).val());
    $scope.formData.applicationinfo.branch_of_service=$(element).val();

};

这是PHP的控制器

$data['branch_of_service'] = 
getSelectCombo(
    $tblName = "cbx_branch_of_service",
    $cboxName = "branchOfService", 
    $optionValue = "branch_service_id", 
    $optionTxt = "value", 
    $classes = "form-control", 
    $id = 'branchOfService',
    $model='formData.applicationinfo.branch_of_service',
    $attributes = "onchange='angular.element(this).scope().changeBranchOfService(this)'",
    $selectedVal = ($guest['service_branch_id']) ? $guest['service_branch_id'] : set_value('service_branch_id'), 
    $whereCond = '', 
    $whereField = '', 
    $showDefaultSelectValue = "true"
);

现在ChangeBranchOfService函数既没有调用也没有NG模型工作我是角色的新手 提前致谢