Hi there, I have a form based on a table of contractors and a subform based on the child table that lists the shifts for each contractor. I have a field called "week number" in the shift table and I want to be able to ask the user the week number when they open the form and have it filter out the shifts for just that week number. I have tried to run the apply filter on the OnOpen of the subform using a query that was identical to the datasource except it used a parameter in the week number field criteria. That didn't work. Can anyone help? Dawn