setPfxAttrs - simple

# setPfxAttrs - simple

# select brushes
from pymel.core import *
import random as r
sl = selected()
#sl = ls("crvsToMeshStrokeGrp")[0].listRelatives(c=1)
for s in sl:
    sh = s.getShape()
    globalScale = .005
    sCurve = sh.listConnections(p=1)[1]
    print sCurve

    sCurveLen = arclen(sCurve)
    sampleDensityAmnt = sCurveLen*globalScale
    setAttr(s.sampleDensity, sampleDensityAmnt)