The OWC 10 visual basic refernce (help) says:

PivotFieldFilterFunctionEnum can be one of these
PivotFieldFilterFunctionEnum constants.
plFilterFunctionBottomCount
plFilterFunctionBottomPercent
plFilterFunctionBottomSum
plFilterFunctionExpression
plFilterFunctionMemberSet
plFilterFunctionNone
plFilterFunctionTopCount
plFilterFunctionTopPercent
plFilterFunctionTopSum

When I tried this, i found the enumerator has all but,
plFilterFunctionExpression and plFilterFunctionMemberSet.
I wanted to use plFilterFunctionExpression to form custom expressions for
filteration. Any idea, why it isnt there? suggestions on workarounds??

regards,
Ali