Leser ikke fra ini fil

Jeg får ikke mitt script til å lese en key fra en INI fil.

    Declare Function GetPrivateProfileString Lib "Kernel32" Alias "GetPrivateProfileStringA" (ByVal sSection As String, ByVal sKey As String, ByVal sDefault As String, ByVal sReturn As String, ByVal lReturnSize As Long, ByVal sFilename As String) As Long
    Declare Function WritePrivateProfileString Lib "Kernel32" Alias "WritePrivateProfileStringA" (ByVal sSection As String, ByVal sKey As String, ByVal sSetting As String, ByVal sFilename As String) As Long

    Public Function CallINI(ByVal txtSection As String, ByVal txtKey As String, ByVal txtPath As String) As String
        'Funktionen henter værdier fra inifil.
        Dim sValue As String
        Dim lSize As Long
        Dim lTemp As String
        Dim sDefault As String
        'sValue = String(256, " ")
        lSize = Len(sValue)
        lTemp = GetPrivateProfileString(txtSection, txtKey, sDefault, sValue, lSize, txtPath)

        If lTemp <> 0 Then
            CallINI = sValue
        Else
            CallINI = sDefault
        End If
    End Function

Dette blir kalt med:
allINI("GENERAL", "ProgramFilePath", "C:\test.INI")