code: def set_string_value(self, index, s):
          
          return self.__set_string_value(index, javabridge.get_env().new_string(s))
docs: Sets the string value at the specified position (0-based).
  
          :param index: the 0-based index of the inernal value
          :type index: int
          :param s: the string value
          :type s: str