<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def value(self, value):
 """Setter for value. :param value: The value. :type value: object """

        # For custom value
        if value not in self.options:
            if len(self.labels) == len(self.options):
                self.options[-1] = value
            else:
                self.options.append(value)

        self._value = value