wildcarding works in put-attribute@value but not in put-attribute@expression

[Mck]

w/ Tiles-2.2.2-SNAPSHOT.

This works:
    <definition name="REGEXP:([^.]+)">
        <put-attribute name="something" value="some-{1}.jsp"
    </definition>

but this does not:
    <definition name="REGEXP:([^.]+)">
        <put-attribute name="something" 
expression="some-{1}-${requestScope.someVariable}.jsp"
    </definition>

Is there a design reason this is not supported/implemented?
Otherwise, Is there a way to configure it to be so?
Otherwise, Will a patch to implement it be accepted?

~mck

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