VBA用户窗体上命令按钮的间距均匀

我有几个用户表单(大小取决于用户输入——他们选择了多少功能)。 我的问题是,我想将“下一步”命令按钮与右下角对齐(将“后退”按钮与左下角对齐)。在下图中,我希望四条红线的距离都是一样的。

我认为这可能就像使用UserForm1的高度和宽度,减去“下一步”,再加上“返回”一样简单,但这行不通。

Private Sub UserForm_Initialize()
    'Adjust Commandbutton
    With CommandNext
            .Caption = " Next " & WorksheetFunction.Unichar(129094)
            .Width = 40
            .Height = 21
            .Left = UserForm1.Width - CommandNext.Width - 32
            .Top = UserForm1.Height - CommandNext.Height - 32
        End With
    With CommandBack
       .Caption = WorksheetFunction.Unichar(129092) & " Back "
       .Width = 40
       .Height = 21
        .Left = 32
        .Top = CommandNext.Top
        End With
End Sub

这是错误的:

如何更改代码以在任何大小的Userform上工作?

已更新 我原本期望两个按钮与底部角落的距离相同(请注意,这并不完美,因为它是由递减/递增的数字产生的):

Private Sub UserForm_Initialize()
    'Adjust Commandbutton
    With CommandNext
            .Caption = " Next " & WorksheetFunction.Unichar(129094)
            .Width = 40
            .Height = 21
            .Left = UserForm1.Width - .Width - 14 'manually altered
            .Top = UserForm1.Height - .Height - 32
        End With
    With CommandBack
       .Caption = WorksheetFunction.Unichar(129092) & " Back "
       .Width = 40
       .Height = 21
        .Left = 5 'manually altered
        .Top = CommandNext.Top
        End With
End Sub