ASK - How to pass parameters in RDLC Report (reportviewer)?

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VB

I have an RDLC report consists of three field (from a table). The field names are "name", "age", "sex". I want to filter the "sex" field to get only the female. In rdlc design I set up a parameter called ParamSex and put it in a TextBox. And here's the code for the ReportViewer1 control.

Me.tblNamesTableAdapter.Fill(Me.dbtutorialDataSet.tblNames)
Dim pSex As ReportParameter = New ReportParameter("ParamSex", "Female",False)
me.ReportViewer1.LocalReport.SetParameters(pSex)
Me.ReportViewer1.RefreshReport()

It doesn't work. It only shows the first field while the first field is Male.
Please help me.