Advice, please: Restricting wild cards in anonymous types

I am working with a "standard" schema that allows <xs:any,
namespace="##other" ... in its complex types.  The problem I am having
is that, since the complex types are anonymous, I don't seem to be able
to restrict (or extend) them in the usual way.  Is there any way around
this issue, some other way to restrict the xs:any to a specific element
that is local to my own namespace?

 

Thanks,

Linda Grimaldi