unsure what to Set object to

[CyberJar]

Hello,

I'm having a problem with this code when viewed online. Here's the code:

Private Sub UserForm_Initialize()
 
Dim OldState As Integer
OldState = Application.WindowState
Application.WindowState = xlMaximized
Me.Top = Application.Top
Me.Left = Application.Left
Me.Height = Application.Height
Me.Width = Application.Width
Application.WindowState = OldState
 
End Sub

Evidently I must explicitly define "Application". So when I add:

Dim xlApp as Excel.Application

I'm unsure of what to set it to:
Set xlApp = ????????

I tried adding "Excel.Application" to each line:
OldState = Excel.Application.WindowState
Excel.Application.WindowState = xlMaximized
etc....
but I'm still getting error 1004, object not SET. What do I set the object to? This is straight Excel/VBA.

Thank you,
CJ