Userform Scroll bars

Can't make the scrollbar show until I click on textbox? the textbox has a lot of data but you have to click to show bar.

With TextBox1
      .ScrollBars = fmScrollBarsVertical
      .EnterFieldBehavior = fmEnterFieldBehaviorRecallSelection
        .SelStart = 0
        .SelLength = 0
    End With