Cinematic Studio Strings Multiphonic Expression map

Hi!
I’m a relative newbie with expression maps, and I am having some trouble getting CSS to play multiphonic passages with my current expression map. I’ve been using an expression map made by another wonderfully helpful user on here, and this is what it currently looks like:

According to the CSS manual, the CC value for non-legato is 81-85, which this expression map seems to have set, and yet it is currently playing double-stops as two separate notes in quick succession. What am I missing from this expression map that doesn’t seem to trigger the double-stop playback?