ComboBox BackColor does not apply

[drom]

Hi andThanks in advance!


I have the following code whithing a macro:

Dim wCombo2 As String:        wCombo2 = Hoja04.ComboBox2.Value
Dim wCombo3 As String:        wCombo3 = Hoja04.ComboBox3.Value
  Dim pvTable As PivotTable:  Set pvTable = Hoja04.PivotTables("PT1")
Dim pvField
  If wCombo2 = wCombo3 Then
    'I am trying to apply red color to both Combos
    Hoja04.ComboBox2.BackColor = &HFF&:     Hoja04.ComboBox3.BackColor = &HFF&
    Application.ScreenUpdating = True
    MsgBox "What's Wrong's Explanation", vbCritical,"Check the Red Combos"
    Application.Wait (Now + TimeValue("0:00:2"))
    'I return the previous color to both combos, gray color
    Hoja04.ComboBox2.BackColor = &HE0E0E0: Hoja04.ComboBox3.BackColor = &HE0E0E0
    Exit Sub
  End If

This code works fine when I run my macro using F8, I mean step by step

but when using F5, If wCombo2 = wCombo3 then
I am not able to apply a red color to both combos for 2 seconds


What am I missing??