Limit number of records displayed in a subform

Limit number of records displayed in a subform

How can I limit the number of records displayed in a subform, both when it is displayed in a view and when the detail is opened to edit.

We gather monthly statics on clubs in Africa. Years of data is collected, and I only want the user to see the current year at a time. Our main form has club info with a subform for attendance records.

In a test (which didn't work) I tried to just limit to the Month of November. Below is a snipit from the parent form code:

    Weekly_Statistics
    (
        displayname  =  "Weekly Statistics"
        type  =  grid
        values  =  Nar_Stats[Month == "November"].ID
    )