Count up from specific row, instead of end: to Hide rows with 'X' in column B

[BeeJayII]

How to modify existing code, so that the last row is 23, instead of END (very last row used)

Dim RowNdx As Long
Dim LastRow As Long

[CODE]LastRow = ActiveSheet.Cells(Rows.Count, "B").End(xlUp).Row
For RowNdx = LastRow To 1 Step -1
If Cells(RowNdx, "B").Value = "x" Then
Rows(RowNdx).Hidden = True
End If
Next RowNdx[/CODE

[protonLeah]

Do you mean:
a) start at 23 and move up?
For RowNdx = 23 To 1 Step -1

b) or, start at bottom and go up to 23?
For RowNdx = LastRow To 23 Step -1