B4J Question ClickCount behavior

Sub Process_Globals
    Private fx As JFX
    Private MainForm As Form
    Private xui As XUI 
    Private Button1 As B4XView
    Private Button1Index As Int
End Sub

Sub AppStart (Form1 As Form, Args() As String)
    MainForm = Form1
    MainForm.RootPane.LoadLayout("Layout1")
    MainForm.Show
End Sub

Private Sub Button1_MouseClicked (EventData As MouseEvent)
    Button1Index = Button1Index + 1
    If EventData.ClickCount > 2 Then Return
    If EventData.ClickCount = 1 Then
        Dim MyIndex As Int = Button1Index
        Sleep(300)
        If MyIndex <> Button1Index Then Return
    End If
    Log(EventData.ClickCount)
End Sub