How a textbox_enter can change a SpinButton?

Hello,

I have a form with a listbox. It has some properties and, using a "textbox_change", a array and a button "finish", I can save values to that properties in a sheet.

To facilitate handling, without having to keep clicking all the time in the listbox, I created a SpinButton and it's working - I use spinbutton1_SpinUp and _SpinDown, ex:

Private Sub SpinButton1_SpinUp()
    If ListBox1.ListIndex + 1 < ListBox1.ListCount Then
        ListBox1.Selected(ListBox1.ListIndex + 1) = True
    End If
    TextBox1.SetFocus
End Sub

However, I wish every time we type "enter", it goes to the next item on listbox. I tried, but I don't know how to call "_SpinDown" inside "Textbox1_enter()".

There must be a better way to solve it.