I would like to use a simple sop solver setup to scale the pieces of a fracture object when they register an impact

right now I'm trying to create an impact group

with
dopnumrecords(“.”, $OBJNAME“, ”Impacts“, ”Impacts“)>=1
to activate the group

and then pipe that into a multi solver with a sop solver that scales down everyting in the group ”impact“

but it doesent seem to work,

the same setup works if I set it up with a single RBD object,
and
dopnumrecords(”.“, ”realNameOfsingleRBDobject“, ”Impacts“, ”Impacts")>=1
but it seems to have to be different with a fracture/glue object
and / or using $OBJNAME instead of the real string name of the object

any help would be greatly appreciated

thanks
-johnc