Add Model file to Hyperview

Hi, 

I am new to Hyperview Customization, i want to add model file to hyperview and used below code,

hwi OpenStack
hwi GetSessionHandle session_handle
session_handle GetProjectHandle project_handle
project_handle GetPageHandle page_handle [project_handle GetActivePage]
page_handle GetWindowHandle window_handle [page_handle GetActiveWindow]
window_handle GetClientHandle client_handle
set model_file1 'C:\hyper\PLATE_EXAMPLE\PLATE2.bdf'
client_handle AddModel $model_file1
hwi CloseStack

with this code i am unable to add Model file,

please suggest me better solution for this

Thanks in Advance,

sandeep