Dear Qamar Uz Zaman Malik

Greetings,

Please find the attached file may be related for your question,

Best Regards

I can tell you from personal experience, simulation is extremely assumption sensitive task. So, be watchful of all your assumptions. 

Also, make sure you perform a Sensitivity analysis to measure the magnitude of sensitivity your model is exposed to because of your assumptions.

Try to check with one of the available monte carlo packages for spreadsheet software

Dear All, Thank you for your time and support.  Your comments are really helpful.