How can I access the geneValues attribute of a MarkerList object from the CellMix package?

When I just type the name of the object, I get this:

>sml
<object of="" class="" markerlist=""> Types: Th act, Tc act, ..., neutro (total: 10)
Mode: numeric
setName: Abbas
geneIds: 234408_PM_at, 243110_PM_x_at, ..., 229967_PM_at (total: 18)
geneIdType: Annotation (hthgu133pluspm.db)
collectionType: Null
geneValues: 1, 0.323388708044349, ..., 0.545467583479058
details: use 'details(object)'

That darn package has a built in function "geneValues" to read the attribute. Please excuse my french, but the way the library is structured and documented sucks.