How does ivy:publish use the [classifier] attribute

Question

in ivy:publisher the default deliverivypattern is ${ivy.distrib.dir}/[type]s/[artifact]-[revision](-[classifier]).[ext]

I try to set classifier in my ivy.xml under

Answer 1

I had a problem with

Attribute classifier is not allowed to appear in element 'artifact'

I simply added the "extra" namespace in my declaration and was able to use the classifier.