Combobox Change Event Not Triggering WIth Entry of Invalid Value

[Ark68]

Within my userform, I have a combobox (Combobox1).
It's rowsource equals a named range "nrQL" which contains 2 values ... "<" or ">". The combobox does display the correct values for the user to select.
I am having an issue in which, should the user manually type in a value other than "<" or ">", the me.combobox1_change event doesn't trigger, which is where I have the error trapping code.
The me.combobox1_change event does trigger if the user selects one of the two appropriate values. Since it doesn't trigger when the user enters an invalid value, that value is accepted and it shouldn't.

Here is my me.combobox_change event code...

Private Sub ComboBox1_Change()
    Stop
    If Me.ComboBox1.Value <> ">" And Me.ComboBox1.Value <> "<" Then
        Application.EnableEvents = False
        Me.ComboBox1.Value = ""
        Application.EnableEvents = True
        Me.ComboBox1.BackColor = RGB(1220, 220, 220)
    End If
    Me.ComboBox1.BackColor = RGB(255, 255, 255)
    With Me.cbx_hr
        '.RowSource = "nrHrs"
        .BackColor = RGB(255, 255, 255)
        .Locked = False
    End With
End Sub

Where have I gone wrong?