How to Add upload attachment button in VBA excel - excel

Question

I've developed a small ticketing system on excel VBA
The Save button will take all data from textboxes and radio button and add it to the row number 7 (in this case)
But when I press upload I can't add the link to the label of attachments
How to add link to the attachment label using (upload file ) button
And also save the Link value stored in upload file button to use it later in clear button and save button?
I'm confused to work with private sub and private dim variables.
I'm newbie in VBA please help
User Form of the System
Save Button Code
Upload button code
Public Sub btnAttachment_Click()
'To upload file link format is png, jpeg, PDF or All files'
Dim wks As Worksheet
Dim LinksList As Range
Dim lastRowLink As Long
Dim LinkAttached As Long
Set wks = ActiveSheet
Set LinksList = Range("N1")
'declare last row to insert link to
lastRowLink = WorksheetFunction.CountA(Sheets("Tickets").Range("A:A"))
Sheets("Tickets").Cells(lastRow + 1, 11).Value = LinkAttached
ChDrive "C:\"
ChDir "C:\"
Filt = "PNG Files(*.png),*.png ," & _
"Jpeg Files(*.jpeg),*.jpg ," & _
"PDF Files (*.pdf),*.pdf ," & _
"All Files (*.*),*.*"
FilterIndex = 1
Title = "Select a File to Hyperlink"
Filename = Application.GetOpenFilename _
(FileFilter:=Filt, _
FilterIndex:=FilterIndex, _
Title:=Title)
If Filename <> False Then
wks.Hyperlinks.Add Anchor:=LinksList, _
Address:=Filename, _
TextToDisplay:=Filename
Else
MsgBox "No file was selected.", vbCritical, "Loading Error"
Exit Sub
End If
End Sub
Attachment PDF file link contains the code and photo too
Buttons Code link