code: def set_alt(self, i, alt, break_alt=None, change_time=True):
          '''set rally point altitude(s)'''
          if i < 1 or i > self.rally_count():
              print("Inavlid rally point number %u" % i)
              return
          self.rally_points[i-1].alt = int(alt)
          if (break_alt != None):
              self.rally_points[i-1].break_alt = break_alt
          if change_time:
              self.last_change = time.time(f set_alt(self, i, alt, break_alt=None, change_time=True):
          '''set rally point altitude(s)'''
          if i < 1 or i > self.rally_count():
              print("Inavlid rally point number %u" % i)
              return
          self.rally_points[i-1].alt = int(alt)
          if (break_alt != None):
              self.rally_points[i-1].break_alt = break_alt
          if change_time:
              self.last_change = time.time()
docs: set rally point altitude(s)