@substitutions.setter<EOL><INDENT>def substitutions(self, value):<DEDENT>
self._substitutions = value<EOL>
A list of Substitution objects. These substitutions will apply to
        the text and html content of  the body of your email, in addition to
        the subject and reply-to parameters. The total collective size of
        your substitutions may not exceed 10,000 bytes per personalization
        object.

        :param value: A list of Substitution objects. These substitutions will
        apply to the text and html content of  the body of your email, in
        addition to the subject and reply-to parameters. The total collective
        size of your substitutions may not exceed 10,000 bytes per
        personalization object.
        :type value: list(Substitution)