oh thanks a lot.. basically the smooth attribute was an example... but does that work on all attributes in the attribute editor?????? Because i could have swore i done that for another attribute. I'm making blend shape targets for a facial animation which i wanted to do. I messed up a few times, deleted a few times and on the base, in my input lists, i have all of these "subdAddTopology#". I've deleted the targets, and tried deleted the attribute in the input list and attribute editor, but it wouldn't let me. Any solutions??? or does no one ever run into this problem?