Question about VB2010 web control

Question

okay I want to fill an online form using vb2010, but the problem is that it doesn't have ID:

                <form class="dailiesAnswer-input dailiesForm" action="">
                    <textarea style="height: 44px;" class="dailiesAnswer-text-area">ANSWER HERE</textarea>
                    <input class="submit-button" value="Submit" type="submit">
                </form>

Is there a simple way to replace the Answer here text, with a specific text.

WebBrowser1.Document.GetElementById("answer_result").SetAttribute("value", "Thanks")

didn't work!!