Lock Cells after date passed - VBA Code

[Trebby]

Hi,

Please can you advise?

I'm still very much a novice to VBA coding and would like some help before I lose all my hair for good

I'm trying to allow staff to enter text into merge cells, and once the deadline date has passed it will auto lock these cells so editing cannot be done (audit purposes). I want to do this so it works on a month to month, though my code below only allows for Jan 2015.

Below is the code I'm using but I feel all my ranges aren't quite right

Private Sub Workbook_Open()
    
    Dim wksTarget       As Worksheet
    Dim rngDate         As Range
    Dim rngData         As Range
    Dim c               As Long
    Dim LastRow         As Long
    Dim LastCol         As Long
    
    Const craig           As String = "craig" '<<  adjust to suit
    
    Set wksTarget = ThisWorkbook.Worksheets("Consents") '<<  adjust to suit
    
    If Not blnUnlockedAllCells Then
        wksTarget.Protect Password:=craig, userinterfaceonly:=True
        wksTarget.Cells.Locked = False
        blnUnlockedAllCells = True
    End If
    
    Set rngData = wksTarget.Range("C7:M14") '<<  adjust to suit. range including the date row
    
    For c = 7 To rngData.Columns.Count
        If CDate(rngData(7, c)) <= Date - 2 Then
            On Error Resume Next
            rngData.Columns(c).SpecialCells(8).Locked = True
            On Error GoTo 0
        End If
    Next
    
End Sub

I've attached the sheet to give you a better look into what I am trying to do.

Thanks for you help in advance.

[p45cal]

already self-resolved, see cross post: Lock Cells after date passed - VBA Code