Downloading outlook attachment with specific subject line

I realize that there are a number of examples of this, but for some reason I'm having issues adjusting them to my own needs.

My goal is simple. Within a specific folder (subfolder?), find email with matching subject line, create a folder in C: with the date of the email, and download the email attachment to the just created folder.

The newly created folder piece hasn't been included yet because a) not sure exactly how to go about doing that and b) I can't seem to save the simple attachment to an already created test folder.

Any help MUCH appreciated!

Thank you!

Here's what I have so far:

Sub DownloadAttachment()
 
Dim ns As Namespace
Dim Inbox As MAPIFolder

Dim Item As Outlook.MailItem
Dim Atmt As Attachment
Dim FileName As String

Set ns = Outlook.GetNamespace("MAPI")
Set Inbox = ns.GetDefaultFolder(olFolderInbox).Parent.Folders("Personal").Folders("Fund")


For Each Item In Inbox.Items
    If Item.Subject = "HELLO THIS IS A TEST" Then
        FileName = "C:\Test\Attachments\" & Atmt.FileName
        Atmt.SaveAsFile FileName
    End If
Next Item

End Sub

oops. Also, there will only be one attachment so there's no need to loop through all attachments of the email as I've seen folks do before.

thank you and happy new year! sorry for late reply, I really do appreciate the help (just been on vacation). Since I'm still new, how would i incorporate another email subject for which I want to download attachments? E.g.,

If Item.Subject = "HELLO THIS IS A TEST" Or "HELLO THIS IS A TEST PT 2" Then

This is perfect, thank you!