return csv file as recordset
===

I have an external program that exports data into CSV files. My users would like to have access to this data through a VBA function in excel. In order to do this, I thought about wrapping the CSV file read into a function that returns a ADODB.Recordset. My code is

    Public Function getData(fileName As String) As ADODB.Recordset
    Dim path As String
    path = "C:\testDir\"
    Dim cN As New ADODB.Connection
    Dim RS As New ADODB.Recordset
    cN.Open ("Provider=Microsoft.Jet.OLEDB.4.0;" & _
                   "Data Source=" & path & ";" & _
                   "Extended Properties=""text; HDR=Yes; FMT=Delimited; IMEX=1;""")
    RS.ActiveConnection = cN
    RS.Source = "select * from " & fileName
    Set getData = RS
    End Function


I am trying to call this function using


    Dim a As ADODB.Recordset
    Set a = getData("testFile.csv")
    a.Open()

At this point, I get a compile error saying '=' expected. Could someone point me in the right direction on how I should call my function and loop through the data? 