ASP FilterExpression issue with using an IN statement

I am trying to filter a listing by state using a drop down list of time zones.  I have a database with

Eastern	('ME', 'VT', 'NH', 'MA', 'RI', 'CT', 'NY', 'PA', 'NJ', 'DE', 'MD', 'VA', 'SC', 'GA', 'FL', 'OH', 'WV', 'IN', 'KY')
Central	('TN', 'AL', 'MS', 'LA', 'AR', 'MO', 'IA', 'MN', 'ND', 'SD', 'NE', 'KS', 'OK', 'TX')
Mountain	('NM', 'CO', 'WY', 'MT', 'ID', 'UT', 'AZ')
Pacific	('NV', 'CA', 'OR', 'WA')

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and a dropdownlist with the first column as the name and the second as the value.  I have another database that has a huge list of names, addresses and phone numbers, and I want to be able to control what is shown in this other drop down list by the time zone.  Below is my code for the second drop down box.

<asp:SqlDataSource ID="SqlJub" runat="server" 
        ConnectionString="<%$ ConnectionStrings:JubConnectionString %>" 
        SelectCommand="SELECT [Company], [id], [State] FROM [Contacts] WHERE (([call1] IS NULL) AND ([emailed] IS NULL)) ORDER BY [Company]"
        FilterExpression="State in '{0}%'" >
        <FilterParameters>
        <asp:ControlParameter Name="State"  ControlID="DropDownList2" />
        </FilterParameters>

    </asp:SqlDataSource>

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Whenever I try to run the above in my web page, it gives me a message "Syntax error: The items following the IN keyword must be separated by commas and be enclosed in parentheses"

Any and all assistance would be appreciated.