How to order by more than one field in Grails?

Hates_ criteria answer didn’t seem to work for me; putting "last,first" in order will only cause exceptions saying, "Property 'last,first' not found". To order on two fields, you can do the following:

def c = MyDomain.createCriteria()
def results = c.list {
    and{
       order('last','desc')
       order('first','desc')
    }
}