Thanks Eric,
However, when I use the array for feeding the color, it drops the error message again, it doesn't matter what is the initial value in the a_VC array...I start to feel, that it's the array itself... From: [email protected] [mailto:[email protected]] On Behalf Of Eric Thivierge Sent: Thursday, September 27, 2012 1:19 PM To: [email protected] Subject: Re: Python and xsi commands I don't have zbrush but I think the fact that you are setting the default values to None in your a_VC list is causing a problem. I don't think it takes it as a default value. I would set the default to a color like black or something if you are going to set values on all polynodes. Otherwise, you should only create the lists for the polynodes that you are setting them on. The following script while it isn't working as you like shows that if you put None in the a_VC it will fail: # Python from win32com.client import constants as c from win32com.client.dynamic import Dispatch as d xsi = Application log = xsi.LogMessage collSel = xsi.Selection DEBUG = 0 OBJ = collSel(0) geoOBJ = OBJ.Activeprimitive.Geometry nodesizes = OBJ.Activeprimitive.ICEAttributes('NbPolygonNodes').DataArray nodesize = nodesizes[0] a_nodes = [x for x in range(nodesize)] #vbObjectInitialize((nodesize,), Variant) a_VC = ["&h00000000"] * nodesize #vbObjectInitialize((nodesize,), Variant) log(len(a_nodes)) log(len(a_VC)) l_vcs = Application.CreateVertexColorSupport("","PolyPaint",OBJ) cnt = 0 o_vertex = geoOBJ.Vertices(cnt) for node in o_vertex.Nodes: idx = node.Index a_VC[idx] = -16777216 a_nodes[idx] = idx cnt += 1 log(a_nodes) log(a_VC) Application.PaintVertexColors(OBJ.FullName, a_nodes, a_VC, 1) PS: Xavier and I are on Australia time. :) -------------------------------------------- Eric Thivierge http://www.ethivierge.com

