Creating Markers and a Deformable Surface

Hi,
i am trying to do rigid and flexible body contact. but getting error message, while creating Deformable surface through Macro - create Deformable surface from FEM as shown in picture.
<?xml version="1.0" encoding="UTF-8"?>
can't read 'Num_Occ()': no such element in array
can't read 'Num_Occ()': no such element in array
while executing
'if { $Num_Occ($NextRowPointer) == 1 } {
set MarkerNodeList([expr $NumMarkerRows + 1]) $NextRowPointer
...'
(procedure '::model::_private::Surface_Macro::CreateMarkers' line 264)
invoked from within
'::model::_private::Surface_Macro::CreateMarkers'
('eval' body line 1)
invoked from within
'# Compiled -- no source code available
error 'called a copy of a compiled script''
(procedure '::hwt::ReleaseCanvasButton' line 1)
invoked from within
'::hwt::ReleaseCanvasButton 0 .modelPanel.surfCreate.bottom.btnGenerate'
(command bound to event)
Please give suggestions to eliminate this error.
Thanks,
Narasimhamurthy