nHair system

[likage]

I am trying to do a ribbon spine script but everytime when I tried running my code, it works the first time round and fails the second time when I have removed some of the elements in the nHair System in the first round.

I tried googling and echoing all commands to search how to add in a new hair systems but unable to do so.

Any ideas?

 def createPlane(self):
        global nurbsPlane
        # Create the nurbsPlane
        nurbsPlane = cmds.nurbsPlane(n = "nurbsPlane", p=[0,0,0], ax = [0,1,0], w=1, lr=5, d=3, u=1,v=5, ch=1)
        cmds.select(nurbsPlane, r=True)
        # Cleanup the control vertexs
        mm.eval("createHair 1 5 5 0 0 0 0 5 0 2 1 1;")
        cmds.rename("hairSystem1Follicles", "hairSys_Follicles")
       
        cmds.rebuildSurface(nurbsPlane, rpo=1, rt=0, end=1, kr=0, kcp=0, kc=0, su=1, du=1, sv=0, dv=3, tol=0.01, dir=0)