Visual Basic 2010 Youtube Like Click Confirmation without api?

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VB

hello is it possible to confirm youtube like click of the webbrowser component without using youtube api ?.

I have this code:

Try

    Dim elements As HtmlElementCollection = WebBrowser1.Document.GetElementsByTagName("button")
    For Each webpageelement As HtmlElement In elements
        If webpageelement.GetAttribute("id") = "watch-like" Then
            webpageelement.InvokeMember("click")
            CheckBox5.Checked = True
        Else

        End If
    Next
Catch ex As Exception
End Try

If the button is clicked then checkbox is checked .
If the movie is removed checkbox is not checked because there is no what to click.


youtube has a limit like, you can click a limited number of times per day.
At some point after clicking like not add likes.
How to make a checkbox not marked