compile error:Sub or function are not defined

In This code i am trying to update my excel sheet in mysql but i am getting this error please help me some suggestions

i my excel sheet starting column is WDS_id

Sub updateData()
Dim cn As New ADODB.Connection
Dim wds_id, nRows
  cn.ConnectionString = "Provider = MSDASQL.1; Persist Security Info = False;Data Source = mysql32; User ID = root;Password = bmx1; Initial Catalog = wds"
  cn.CursorLocation = adUseClient
  cn.Open

 Dim i As Integer, QryTxt As String

 i = startingrow(wds_id)
 Do Until i = Sheet1.Rows.count
  If Sheet1.Cells(i, 1) = "" Then
   nRows = i - 1
   Exit Do
  End If
  i = i + 1
 Loop

 For i = startingrow(wds_id) To nRows
        QryTxt = QryTxt & "update tblprod_agr_006 set column1 = '" & Replace(Sheet1.Cells(i, 1), "'", "''") & "'," & vbCrLf
                           QryTxt = QryTxt & "    column2 =  '" & Replace(Sheet1.Cells(i, 3), "'", "''") & "'," & vbCrLf
                           QryTxt = QryTxt & "    column3 =  '" & Sheet1.Cells(i, 4) & "'," & vbCrLf
        QryTxt = QryTxt & "where conditioncolumn =" & "'" & Sheet1.Cells(i, 2) & "'" & "" & vbCrLf
 Next

Change cn.Execute(QryTxt)
End Sub

let me know how would set startingRow code