VBA Save As Current Filename +01 - vba

Question

I'm looking to write a macro to save my current version filename +1 instance of the version. For each new day the version would reset to v01. Ex. Current = DailySheet_20150221v01; Save As = DailySheet_20150221v02; Next Day = DailySheet_20150222v01
While increasing the version number, I am hoping the version won't have to contain the v0 once v10+ has been reached.
I was able to workout how to save the file with today's date:
Sub CopyDailySheet()
Dim datestr As String
datestr = Format(Now, "yyyymmdd")
ActiveWorkbook.SaveAs "D:\Projects\Daily Sheet\DailySheet_" & datestr & ".xlsx"
End Sub
but need additional help in finding the version addition. Could I set the SaveAs to a string, then run it through a For/If - Then set?

Answer 1

Put this out to a couple of my friends and below is their solution:
Sub Copy_DailySheet()
Dim datestr As String, f As String, CurrentFileDate As String, _
CurrentVersion As String, SaveAsDate As String, SaveAsVersion As String
f = ThisWorkbook.FullName
SaveAsDate = Format(Now, "yyyymmdd")
ary = Split(f, "_")
bry = Split(ary(UBound(ary)), "v")
cry = Split(bry(UBound(bry)), ".")
CurrentFileDate = bry(0)
CurrentVersion = cry(0)
SaveAsDate = Format(Now, "yyyymmdd")
If SaveAsDate = CurrentFileDate Then
SaveAsVersion = CurrentVersion + 1
Else
SaveAsVersion = 1
End If
If SaveAsVersion < 10 Then
ThisWorkbook.SaveAs "D:\Projects\Daily Sheet\DailySheet_" & SaveAsDate & "v0" & SaveAsVersion & ".xlsm"
Else
ThisWorkbook.SaveAs "D:\Projects\Daily Sheet\Daily Sheet_" & SaveAsDate & "v" & SaveAsVersion & ".xlsm"
End If
End Sub
Thanks to all those who contributed.

Answer 2

Try this one:
Sub CopyDailySheet()
'Variables declaration
Dim path As String
Dim sht_nm As String
Dim datestr As String
Dim rev As Integer
Dim chk_fil As Boolean
Dim ws As Object
'Variables initialization
path = "D:\Projects\Daily_Sheet"
sht_nm = "DailySheet"
datestr = Format(Now, "yyyymmdd")
rev = 0
'Create new Windows Shell object
Set ws = CreateObject("Wscript.Shell")
'Check the latest existing revision number
Do
rev = rev + 1
chk_fil = ws.Exec("powershell test-path " & path & "\" & sht_nm & "_" & datestr & "v" & Format(rev, "00") & ".*").StdOut.ReadLine
Loop While chk_fil = True
'Save File with new revision number
ActiveWorkbook.SaveAs path & "\" & sht_nm & "_" & datestr & "v" & Format(rev, "00") & ".xlsm"
End Sub

Answer 3

If you have the current filename I would use something like:
Public Function GetNewFileName(s As String) As String
ary = Split(s, "v")
n = "0" & CStr(CLng(ary(1)) + 1)
GetNewFileName = ary(0) & "v" & ary(1)
End Function
Tested with:
Sub MAIN()
strng = GetNewFileName("DailySheet_20150221v02")
MsgBox strng
End Sub