VBA create names for columns - excel

Question

So I have a worksheet called "gar_nv" containing in its first row some strings that I'd like to define as names for my columns. For instance, first cell of column A is "Number", I'd like to refer to the column A(starting from the second cell) as "Number" instead of column "A".
Sub NameCol()
Dim LastRow As Long
Dim x As Long, Rng As Range
With gar_nv
For x = 1 To .UsedRange.Columns.Count
LastRow = Cells(Cells.Rows.Count, x).End(xlUp).Row
Set Rng = Cells(2, x).Resize(LastRow)
.Names.Add Name:=Cells(1, x), RefersTo:=Rng
Set Rng = Nothing
Next
End With
End Sub
When I test my code like this, it throws a 91 error, what am I doing wrong?
Sub test()
With gar_nv
For Each Rng In .Range("Number")
MsgBox (Rng.Value)
Next
End With
End Sub

Answer 1

Create Names for Columns of Data
gar_nv is the code name of a worksheet in the workbook containing this code.
Option Explicit
Sub NameColumnsData()
' Delete all previous names in the worksheet.
'DeleteAllWorksheetNames gar_nv
Dim hrg As Range ' header range
Dim drg As Range ' data range
Dim cCount As Long ' number of columns
With gar_nv.UsedRange
Set hrg = .Rows(1)
Set drg = .Resize(.Rows.Count - 1).Offset(1)
cCount = .Columns.Count
End With
Dim crg As Range
Dim c As Long
Dim cTitle As String
For c = 1 To cCount
cTitle = hrg.Cells(c).Value
Set crg = drg.Columns(c)
gar_nv.Names.Add cTitle, crg
' Of course, you can lose the variables and just do:
'gar_nv.Names.Add hrg.Cells(c).Value, drg.Columns(c)
Next c
MsgBox "Column data names created.", vbInformation
End Sub
Sub NameColumnsDataTEST()
Dim cCell As Range
With gar_nv
For Each cCell In .Range("Number").Cells
' Caution! If there are many cells it may take 'forever'.
'MsgBox cCell.Address(0, 0) & ": " & cCell.Value
' Rather print to the Immediate window (Ctrl+G):
Debug.Print cCell.Address(0, 0) & ": " & cCell.Value
Next
End With
End Sub
Sub DeleteAllWorksheetNames(ByVal ws As Worksheet)
Dim nm As Name
For Each nm In ws.Names
Debug.Print nm.Name, nm.RefersTo, "Deleted!"
nm.Delete
Next nm
End Sub