HP QC API: Test lab filter with target cycle

Hi All,

I am trying to filter test set which are related to particular target cycle. Below is my code. I am not getting any error, but  list count displayed as zero.

Set QCConnection = CreateObject("TDApiOle80.TDConnection")
QCConnection.InitConnectionEx QCbinpath
QCConnection.Login sUserName, sPassword



QCConnection.Connect sDomain, sProject

If (QCConnection.LoggedIn <> True) Then
MsgBox "QC User Authentication Failed"
End If

Set testSetF = QCConnection.TestsetFactory
Set testSetFilter = testSetF.Filter
Tar_Cyle = "<I provided my target cycle name here>"
testSetFilter("CY_ASSIGN_RCYC") = Tar_Cyle
Set testSetList = testSetF.NewList(testSetFilter.Text)

For each testset in testSetList
print testset.name

Next

'here testSetList.count is coming as Zero.

Kindly provide your valuable input. Even small help will be very much appreciable.