HYTOS

                row = row + 1

    def on_stream_no_changed(self, item, combobox, index):

        """change connected lines' stream no by selected stream no"""

        try:

            message = f"error occurred({repr(ex)}) in {sys.exc_info()[-1].tb_frame.f_code.co_filename}:" \

                      f"{sys.exc_info()[-1].tb_lineno}"

            App.mainWnd().addMessage.emit(MessageType.Error, message)

    '''

        @brief      Initialize Run Contents Cell

        return None

    @stream_no.setter

    def stream_no(self, value):

        from AppDocData import AppDocData

                        self.attrs[attr] = matches[0].value

                    else:

                        self.attrs[attr] = ''

    def try_eval(self, item, expression):

        try:

                _attrs[attr] = self.try_eval(None, value) if attr.Expression else ''

            """up to here"""

            for _attr, _value in _attrs.items():

                if _value is None or _value == '':

                    _attr.AssocItem = None