parameter passing to crystal report object

When you have to send parameter form asp.net code behind to crystal report then kindly used this syntex or statement to achieve the task

for example

ReportObjectVariable.SetParameterValue(ParmeterName,value)

for example if  rpt is my report and i send value to customer key and objCustomer is my business object then the sample will be as follow

rpt.SetParameterValue(REPORT_SP_PARAMETER_CUSTOMER_KEY, objCustomer.MasCustKey)

More real word examples are as follow

rpt.SetParameterValue(REPORT_SP_PARAMETER_MONTH, CType(Request.QueryString.Item("Month"), Integer))

rpt.SetParameterValue(REPORT_SP_PARAMETER_YEAR, CType(Request.QueryString.Item("Year"), Integer))

rpt.SetParameterValue(REPORT_SP_PARAMETER_CUSTOMER_KEY, objCustomer.MasCustKey, "StatementHead.rpt")

rpt.SetParameterValue(REPORT_SP_PARAMETER_CUSTOMER_KEY, objCustomer.MasCustKey, "StatementFoot.rpt")