Good day Access Gurus!!

I have been reviewing the Tech Help videos associated with splitting DBs, simple security, and TempVars. I have a 'logon button' VBA, which is stalling when trying to identify the 'Alias' to the Username.

My User_t has three fields: Username, Password, and KnownAs.

I've tried to create the caption on the Main Menu, after successful logon to read "Welcome, [Alias]" so that we see their Alias, as opposed to their Username. I have played with various versions of the following code and receive a Run-Time Error '424' Object Required. Can you please review, and see what I'm missing?

Code:

Details

Private Sub LogonBtn_Click()
    
    Dim ID As Long
    Dim PW As String
        
    ID = Nz(DLookup("UserID", "User_t", "Username=""" & Username & """"), 0)
    
    If ID = 0 Then
        MsgBox "User not found"
        Quit
    End If
    
    PW = Nz(DLookup("Password", "User_t", "UserID=" & ID), "")
    
    
    If PW <> Password Then
        MsgBox "Incorrect Password"
        Quit
    End If
    
    If IsNull(Username) Then
        MsgBox "Invalid Username"
        Exit Sub
    End If
    
    If PW = Password Then
        
        DoCmd.OpenForm "Dashboard"
        DoCmd.Maximize
        TempVars("Username") = Username.Value
        TempVars("Alias") = KnownAs.Value
        
        DoCmd.Close acForm, Me.Name, acSaveYes
      
    Else
        
        MsgBox "Invalid Logon"
    
    End If

End Sub
Copy

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My On Load Code:

   DashboardLabel.Caption = "Welcome, " & TempVars("Alias")

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I appreciate the help!!

- Bryon R.