I want to change the highlight size via script. All of the current wacro scripts use InputByInternalName to access various properties of the shader trees. I cannot find or figure out the name of the highlight size. I found Highlight_Color and Highlight_Value. Highlight_size does not work neither does Ns.

Ok I was able to get what I wanted with Input but I have to hard code a 4 in for the highlight_size index which doesn't seem very stable to me since the root node sequence could change.

It's "Roughness". You can simply print out the internal names of all the inputs in a node with a wacro like this:

def printInputs(mat):
   
   tree = mat.ShaderTree()
   root = tree.Node(0)
   for node in tree.Nodes():
      for input in node.Inputs():
         print input.InternalName()
 
mats = poser.Scene().WacroMaterials()
if (mats == None):
        poser.DialogSimple.MessageBox( "Please select a material first.")
else:
        for mat in mats:
                printInputs(mat)

Thanks!