Cloth sim questions

[Ced J.]

Hi all !
I'm trying to make a disappearing effect using cloth to have an organic look...
Here is my setup, what i want to achieve is to make the particles disappears with scale (100 ->0)  when the particles get a certain velocity. and then kill it.
So i set up a property test, it works but obviously scale operator do not work with cloth particles
Do you guys have any idea to achieve that ? I tried to put an other cloth bind convert (cloth to shape) with no luck

Any help ? 
and have a great year everbody !

Thanks