Eu estou tentando descobrir porqueVBA está retornando um erro(Compile error: Expected: =)quando eu chamo umSub e fornecê-lo com vários parâmetros.

Sub customerController(cleanStructure As Boolean, firstCol As Integer, latCol As Integer, _
                    lngCol As Integer, Optional startRow As Long, Optional endRow As Long)

Dim i As Long, j As Long, n As Long

If (cleanStructure = False) Then
    'customer data type
    If (startRow = "") Then i = 1
    If (endRow = "") Then j = countRows
    For n = i To j - i + 1
        generateURL(n, firstCol)
        newReadXMLData (url)
        ActiveSheet.Cells(i, latCol).Value = lat
        ActiveSheet.Cells(i, lngCol).Value = lng
    Next
End If

End Sub

oSub que estou chamando requer dois parâmetros:

Sub generateURL(row As Long, column As Long)