VBA: Trying to hide/unhide rows based on cell values and a checkbox in Excel 2010

[EuroEdit]

Hi guys,

I'm trying to create a "front page" where a couple of checkboxes allow the user to unhide/hide rows in other sheets, based on the country value in the A column in these sheets. I've included my code for a single checkbox, which works well enough in terms of hiding rows when the checkbox in unchecked, but not in terms of unhiding rows that have previously been hiden. Any suggestions would be much aprreciated. Thanks!

Sub Checkbox8_Click()
Dim cel As Range, rng As Range
    Application.ScreenUpdating = False
    
    If Sheets("Checklist").Range("M5") = True Then
    Set rng = Worksheets("Tax").Range("A1", Worksheets("Tax").Range("A65536").End(xlUp))
     
    For Each cel In rng
         
    If cel.Value = "France" Then
    cel.EntireRow.Hidden = False
    End If
        
         
    Next cel
    
    Else
    
    Set rng = Worksheets("Tax").Range("A1", Worksheets("Tax").Range("A65536").End(xlUp))
    
    For Each cel In rng
    
    If cel.Value = "France" Then
    cel.EntireRow.Hidden = True
    End If
    Next cel
        
    End If
    Application.ScreenUpdating = True
    
End Sub