Switching off mesh smoothing

Hi,

I have a simple item of clothing which I've modeled and fitted to the base G2F female.  I've also imported a few morphs for the clothing via Morph Loader Pro.

One of these morphs looks better when the clothing's mesh smoothing modifier is turned off.   Otherwise I'd prefer smoothing to stay on.   Is there a way to

switch smoothing off when the morph's dial reaches 100% and to switch it back on when it's at 0%?