Hi yagandhar,
Ya its a simple problem. When you open the property of a verilog cell and want to edit its parameters then it doesnot show up directly .... Do the following ...
1) Select the device and open the
Edit Object Property window
2) You will find
CDF Parameter of View which is set to
Use Tools Filter by default
3) Click and open the drop down menu there and select
veriloga instead of
Use Tools Filter
4) The veriloga parameters should appear now
Hope this will help ...