textbox binding angular2

Question

@Component({
selector:'courses',
template:`.......
<input type="text" [(ngModel)]="newCourse" />
<input type="button" value="Add Course" (click)="AddCourse()"/>
})
export class CoursesComponent{
AddCourse()
{
this.courses.push(this.newCourse);
}
}

This is not working please help