this is what I have for cr v10 and formula name ,bet you that you can use
parameter using the same syntax.
oRpt = New ReportDocument 'Create CR Obj from class
Try
oRpt.Load(fullRptName)
Catch ex As Exception
MsgBox(ex.Message & vbLf & vbLf & fullRptName.ToString,
MsgBoxStyle.Critical, "Open Report")
Exit Sub
End Try
'oRpt.Load("f:\cr\RPTs\deletelg.rpt")
CrystalReportViewer1.ReportSource = oRpt
oRpt.DataDefinition.FormulaFields.Item(idx).Text = myValue
'overwrite the rpt param value
