I am writing

checkbox: {
      title: 'Re-Assiiiiign',
      type: 'html',
      valuePrepareFunction: (value) => { return this._sanitizer.bypassSecurityTrustHtml(this.input); },

      filter: false
 },

and

public input: string = '<input type="checkbox"></input>';
constructor(private _hrdashboardservice: HRDashboardService, private _sanitizer: DomSanitizer){
}

but the check box cannot be clicked. Anybody knows any other way to solve add checkbox in ng2-smart-table?