Export CSV from Excel and exclude rows based on cell value

I have the following code in an Excel workbook that works perfectly to export values from a sheet into a CSV file.  I now need to modify this.

All I need to do is to check every row in my range selection to see if the value in column I is equal to numeric 0.  If I=0, then omit it from the CSV file and continue to the next row.

Can someone help me out with this?

Sub CreateAndExportCSVFile()

Dim fName As String
Dim fs
Dim WholeLine As String
Dim FNum As Integer
Dim RowNdx As Long
Dim ColNdx As Integer
Dim StartRow As Long
Dim EndRow As Long
Dim StartCol As Integer
Dim EndCol As Integer
Dim CellValue As String
Dim Sep As String
Dim Reply As Integer

Reply = MsgBox(Prompt:="Are you sure you are ready to create the payroll CSV file?", Buttons:=vbYesNo, Title:="Create Payroll CSV Confirmation")
If Reply = vbYes Then

    Application.ScreenUpdating = False
    
    On Error GoTo EndMacro:
    
    FNum = FreeFile
    
    Sep = ","
    
    fName = ThisWorkbook.Path & "\" & ActiveSheet.Range("A1") & "_ultipro_wk_" & Format(Now, "dd-mmm-yyyy") & ".csv"
    
    'Determine if the same CSV file aready exists 'If it does, DELETE it and create a new one from 'scratch Set fs = CreateObject("Scripting.FileSystemObject")
    'If fs.FileExists(fname) Then
    'Kill fname
    'End If
       If FileExists(fName) Then
           Set fs = CreateObject("Scripting.FileSystemObject")
           fs.DeleteFile (fName)
       End If
    
    Range("A1:I199").Select
    
    With Selection
    StartRow = .Cells(1).Row
    StartCol = .Cells(1).Column
    EndRow = .Cells(.Cells.Count).Row
    EndCol = .Cells(.Cells.Count).Column
    End With
    
    Open fName For Output Access Write As #FNum
    
    For RowNdx = StartRow To EndRow
    WholeLine = ""
    For ColNdx = StartCol To EndCol
    
    If Cells(RowNdx, ColNdx).Value = "" Then
    CellValue = ""
    Else
    CellValue = _
    Application.WorksheetFunction.Text _
    (Cells(RowNdx, ColNdx).Value, _
    Cells(RowNdx, ColNdx).NumberFormat)
    End If
    WholeLine = WholeLine & CellValue & Sep
    Next ColNdx
    WholeLine = Left(WholeLine, Len(WholeLine) - Len(Sep))
    Print #FNum, WholeLine
    Next RowNdx
    
EndMacro:
    On Error GoTo 0
    
    Application.ScreenUpdating = True
    
    Close #FNum
    
    Range("A1").Select


Else
    Exit Sub
End If

End Sub

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