I'm not sure what you are trying to do here. You have created a macro symbol that contains the month name, and the title will reflect that name, not the month number.
If you are trying to create the month name and year automatically from the system date, then I have to tell you not to. When you report June's performance at the end of the month, it is likely to be July, and the report will be mistitled.
I presume you have some record selection process to identify the current transactions, and you should tie the record selection to the title in a single common step. If you provide that code to the forum, I can look at refining it.
Kind regards
David