TextBox Change Event On MultiPage

I have a MultiPage control that has 67 TextBoxes on it, changes to 14 of these TextBoxes will trigger a public subroutine called TB1Refresh. I have a TextBox and a ComboBox just above the MultiPage control. The ComboBox is set as a MultiColumn. The ComboBox is working. The TextBox is called TB1. The first TextBox on the MultiPage is called TB2. There are no duplicate names on this UserForm. When I scroll though the list in CB1, the values in the TextBoxes on the MultiPage scroll as the they are supposed to. The problem is that every time one of the 14 TextBoxes changes, the subroutine is supposed to fire. Here is the code I use in two of the TextBoxes to fire this sub:

Private Sub TB8_Change()
TB1Refresh
End Sub

Private Sub TB9_Change()
TB1Refresh
End Sub

I put a MsgBox at the beginning and the end of TB1Refresh to see what was happening. They never fired! So the question is, why won't the subroutine fire when called upon to do so. This code was working before I added the MultiPage to this UserForm,