This is what I would do:
In your query, if you add computed fields (assuming that your transactions
have a post /transaction date of some sort):
Month selection: Month([Transaction Date]
Year selection: Year([Transaction Date])
*Substitute [Transaction Date] field with actual field date that has the
post / transaction date.
Once you have created the computed fields, in the criteria field, I would
have it prompt the user to input what ever month / year information.
So, in the Month Selection field criteria line put: [Month Nbr]
Year Selection field criteria line put: [Year Nbr]
2nd option:
In the post date / transaction date field, I would put a prompt in the
criteria line:
Between [Start Date] And [End Date]
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