Passing dropdownlist selected value into text object in crystal report.

See more:

VB

CrystalReports

Hye all..
Why is actually this error occuring?

Invalid index. (Exception from HRESULT: 0x8002000B (DISP_E_BADINDEX))

at

rpt.SetParameterValue("fy", filter)

in this code

Me.crvQuality.ReportSource = rpt
       rpt.SetParameterValue("fy", filter)
       crvQuality.DataBind()
       crvQuality.RefreshReport()

I have googled and found that this error is because parameter name is not same in crystal report and aspx code behind. Howerver I have checked many times and I am sure that my text object name is 'fy'. Without putting this inside my code, the report is viewed nicely.

But I still need to put the report title based on my dropdownlist.selectedvalue.
Tq all for your help