iam new to crystal report..iam using multiple subreport in mainreport and onclick of  particular report it would list out all related to it..for example if u have customer chart in mainreport and onclick of this it would list all customer on demand and subreport is binded and onclick of single customer which should be passed as parameter and it would list out single customer full contact details in another subreport.if this can be done.please expalin briefly as step by step process how it can be done