Help with Report Manager and Vb.net

as giving value to a control rptLabel from vb.net
 

ReportMan.Preview = True
ReportMan.ShowPrintDialog = False
ReportMan.filename = System.Environment.CurrentDirectory & "\infProveedores.rep"
ReportMan.SetParamValue("BPROVEEDOR", ComboProveedor.Text)
ReportMan.Title = "productos por proveedor"
ReportMan.Execute()

in report page header rptLabel I have two and another one called rptProductsProveedor next called rptProveedor
 
How do I get the text value of rptProveedor equals the search provider
 
[edit]code block added[/edit]