Hi Anand,
The report name option refers to name of the report template. Below is an example which I use to generate report using CLW; you may find it helpful
generate report named 'DailyHealthReport' in management module named 'HealthCheck' starting at 'Mon Nov 28 03:00:47 CET 2016' ending at 'Tue Nov 29 03:00:47 CET 2016' to Introscope_Report_EMEA_PROD.pdf
In the above example, I have a report template named, "DailyHealthReport" in management module, "HealthCheck" and I save it to a pdf file.
Hope this helps!
Regards,
Mukesh Singh