Angular 4 ng-template & ng-container with parameters

sample.html

<ng-template #followingpost let-author="author" let-age="age" let-text="text" let-badge="badge">
    <div class="container-fluid">
        <div class="card">
            <div class="header">
                <h4 class="title">{{ author }}</h4>
                <p class="category">il y a {{ age }} jours</p>
            </div>

            <div class="content" [innerHTML]="text">
            </div>

            <div class="text-right">
                <button class="btn btn-icon btn-simple"><i class="ti-comment"></i></button>                            
                <button class="btn btn-icon btn-simple">
                    <i class="ti-heart"></i>
                    <span *ngIf="badge" class="badge">{{ badge }}</span>
                </button>                            
                <button class="btn btn-icon btn-simple"><i class="ti-share"></i></button>                            
            </div>
        </div>
    </div>
</ng-template>            

<ng-container *ngTemplateOutlet="followingpost;context:{author: 'Timothy', age: 2, badge: 18, text: 'Les Français qui payent plus de 2500 € d impôt peuvent bénéficier de cette loi : <a href=`http://bit.ly/2xxMicY`>http://bit.ly/2xxMicY</a>'}"></ng-container>