def METHOD_NAME(self):
    try:
        try:
            high = eval(str(self._label_hi.text()).strip())
            if self.evaluate is not None:
                high = self.evaluate(high)
        except:
            high = self.high
            self._label_hi.setText(self.format_str % self.high)
        if not self.factory.is_float:
            high = int(high)
        if high < self.low:
            high = self.low + self._step_size()
            self._label_hi.setText(self.format_str % high)
        self.control.slider.setHigh(self._convert_to_slider(high))
        self.high = high
    except:
        pass