Move Data Only After All Required Range Cells Have Been Filled

[rich_cirillo]

Hi

How can i make this code when opening up the workbook the first time not Clear Data unless it has been transferred.At present if i open up the workbook and i have data in range C32:M36 i can Clear this data even though i have not transferred it.It works fine after i re-enter the data as it will not let me delete until i have transferred.I just need to stop the data from being deleted when the workbook is first opened.So if i press the Clear Data commandbutton when i first open the workbook i then want it to say Transfer the Data first instead of deleting the data....this only happens when the workbook is first opened...it works fine after that

Thanks

Sub ClearData()
    
    Dim Rng     As Range
        
    Set Rng = Sheets("WEEKLY_GRAPH").Range("c32:M36")
    On Error Resume Next
    Set nmFlag = ThisWorkbook.Names("Flag")
    On Error GoTo 0
    
    If Application.WorksheetFunction.CountA(Rng) = Rng.Cells.Count Then
        If Evaluate("Flag") Then
            Sheets("WEEKLY_GRAPH").Range("c32:M36").ClearContents
            If nmFlag Is Nothing Then
                ThisWorkbook.Names.Add "Flag", "FALSE", 1
            Else
                nmFlag.RefersTo = "FALSE"
            End If
        Else
            MsgBox "Transfer the Data first", vbInformation
        End If
    Else
        MsgBox "Cannot be deleted as incomplete", vbCritical
    End If
    
End Sub