I am having a problem with SQL query I am trying to save a file into access database but getting run time error

Dim fd As FileDialog
Dim SelectFile As Variant
Dim cnn As ADODB.Connection
       Set cnn = New ADODB.Connection
       Dim rst As ADODB.Recordset
       Set rst = New ADODB.Recordset
   Set fd = Application.FileDialog(msoFileDialogOpen)
   With fd
       .AllowMultiSelect = False
       .Title = "Please select file to attach"
       If .Show = True Then
           SelectFile = .SelectedItems(1)
       Else
           Exit Sub
       End If
   End With
   Set fd = Nothing

       cnn.ConnectionString = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" & ThisWorkbook.Path & "\SaveFile.accdb;Persist Security Info=False;"
       cnn.Open
       Set rst = cnn.Execute("INSERT INTO Table1 (AddFiles) VALUES (" & SelectFile & ")")
      ' rst.AddNew
       rst.Fields(1).Value = "AddFiles"

       rst.Update
       rst.Close
       cnn.Close