changing pattern example

[Neil Lott]

How would I define a changing pattern in the filesystem tag instead of  
this to

                <filesystem name="local" checkmodified="true" 
changingPattern="5.1">
that says anything that starts with "twc" and ends with "5.1"

I tried

		<filesystem name="local" checkmodified="true"  
changingPattern="twc*5.1">

But that didn't work.

Neil