Crystal report- Handling multiple values in parameter seperated by(,)

Please follow the link :
1. https://docs.google.com/document/edit?id=1IlBv-F5N0ByQwzyouGqwUiFlQ9DXc5Zi5imAzGAKZcM&hl=en

2. If want to assign Subreport parameter through code then Add Parameter in Main Report ,Create Same type Parameter in Subreport & link it with mail report using report link.

Now Pass the value through code to main report's parameter.