Hello Doug
Yes you could.
FormatDate(Today(), ""MM yyyy"") this should give you, 10 2018 (in my timezone Today that is) then you can put this in ""Open Workbook""
""PriceData ""&FormatDate(Today(), ""MM yyyy"")&"".xlsm""
Please note that it would be good to have both the filename, extension and the date logic in Data Item for better visibility.
Regards,
Met Vonghiran