Контроллер не видит отправляемую дату TS

 let end = null;
    if (dateEnd != null) {
 
      end= SiteHelper.convertToDayWithZeroTime(dateEnd).toISOString()                                                                              
    }
 
...................................................................
return BaseUrl.baseUrl() + `api/userappointment/getcurrentuser/${end}/${end}`

GetCurrentUser(StartDate: Date, EndDate: Date) {
    this.transport.read.url = UserAppointmentControllerUrls.GetCurrentUser(StartDate, EndDate)
    
  }

[JS]
export default class UserAppointmentControllerUrls {
  public static GetCurrentUser(dateStart: Date, dateEnd: Date) {
 
 
    let end = null;
    end = new Date().toISOString()
 
    console.log(dateStart)
    console.log(dateEnd)
 
    return BaseUrl.baseUrl() + `api/userappointment/getcurrentuser/${end}/${end}`
    
  }
}

GetCurrentUser(StartDate: Date, EndDate: Date) {    
    this.transport.read.url = UserAppointmentControllerUrls.GetCurrentUser(StartDate, EndDate)
    var dataSource = new kendo.data.DataSource(this);   
    dataSource.fetch(function() {
      // just check  response body structure
      dir(dataSource.view());
});    
  }