public void StaffNumberMaxLessOne() { //create an instance of the class we want to create clsStaff AStaff = new clsStaff(); //boolean variable to store the result of the validation Boolean OK = false; //create some test data to assign to the property string tstStaffNumber = "P1622561291"; OK = AStaff.StaffNumberValid(tstStaffNumber); //test to see that the result is corresct Assert.IsTrue(OK); }