Hi GopoKrishna S
I checked your project, and here is my answer
First of all, your matlab file is a standalone one; I mean it does not read or write to ports in OptiSystem. so you need make it read and write from/to the ports.
I created simple project (attached) to you to teach you how to make it.
please use it and adapt mine based on your matlab file.
once you successfully did that, you will see output at you matlab-CoS-imulator.
then you should start debug your program
thanks
Mohamed