Set value

def set_value(self, index, value):
        """Set value"""
        self._data[ self.keys[index.row()] ] = value
        self.showndata[ self.keys[index.row()] ] = value
        self.sizes[index.row()] = get_size(value)
        self.types[index.row()] = get_human_readable_type(value)
        self.sig_setting_data.emit()