How to make the IDEA to resolve the symbol defined in <bean:define/>?

My jsp code is like the below, why does the IDEA 4.5.1 prompt me "Cannot revolve the symbol 'items'", but the IDEA 4.0 does not?( I open the same project with IDEA 4.0 and IDEA 4.5.1)
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<bean:define id="items" name="items" type="java.util.List" scope="page" />
<%
Iterator itx = items.iterator();
....

%>
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