using Transform AttributeResolver to get first value of multi-value attribute

[Cantor, Scott]

> I would like to strip the multi-value mail attribute (urn:mace:dir:attribute-
> def:mail) we're receiving from an IDP and only use the first value found.

Can't be done.

> What am I doing wrong here?

Attempting the impossible, and I think fundamentally mistaking the value in the header for the value in the attribute. The separated string is the result of combining all the values at the end, that doesn't exist to operate on before export to the application.

-- Scott