When making this code, I looked inside a material file to find name Poser is using.
Rather than writing extra code, I just have script use internal name. 
Most of the internal name have same value as what you see in material room, but these have exception

   node "poser" "PoserSurface"
    {
    name "PoserSurface"
    pos 10 10
    showPreview 1
    nodeInput "Highlight_Color"
     {
     name "Specular_Color"
     value 1 1 1
     parmR NO_PARM
     parmG NO_PARM
     parmB NO_PARM
     node NO_NODE
     file NO_MAP
     }
    nodeInput "Highlight_Value"
     {
     name "Specular_Value"
     value 0 0 10
     parmR NO_PARM
     parmG NO_PARM
     parmB NO_PARM
     node NO_NODE
     file NO_MAP
     }