WebBrowser and swf textbox and button

How can I select flash textbox, past text, and click button in C# WebBrowser?

TextBox and Button: s7.postimg.org/oh2w84js7/button.jpg

Form where button is:

<form name="working" action="object_do.php" method="POST"><br><table class="wb" width="100%"><tbody><tr><td class="wbwhite" align="center" colspan="2"><b>blahblahblah</b></td></tr><tr><td class="wb" width="140"><img src="work_codes/15903-34/1701507--381682.jpeg" width="250" height="60" border="0" name="imgcode"></td><td class="wblight" valign="center" width="100%">&nbsp;&nbsp;&nbsp;<input type="hidden" size="4" name="code" autocomplete="off"><input type="hidden" value="5" name="id"><input type="hidden" value="5" name="id2"><script type="text/javascript">swfobject.registerObject("2e7f13a242369aa0a133ee3dced5bf5d", "9.0.0", "http://***/swffiles/expressInstall.swf");</script>    <div>                   <object id="2e7f13a242369aa0a133ee3dced5bf5d" classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" width="147" height="22" style="visibility: visible;">                    <param name="movie" value="swffiles/459017015079176508wworkcode.swf?ver=1701507bf3d40fb076319ff7e6c2fc7a4898acdd88">                <param name="FlashVars" value="params=1701507|5|f3d40fb076319ff7e6c2fc7a4898acdd|">                <param name="bgcolor" value="#f5f3ea">                <param name="allowScriptAccess" value="always"><param name="wmode" value="opaque"><!--[if !IE]>-->
BUTTON AND TEXT BOX----------->     <object type="application/x-shockwave-flash" data="swffiles/459017015079176508wworkcode.swf?ver=1701507bf3d40fb076319ff7e6c2fc7a4898acdd88" width="147" height="22">                <param name="FlashVars" value="params=1701507|5|f3d40fb076319ff7e6c2fc7a4898acdd|">                <param name="bgcolor" value="#f5f3ea">                <param name="allowScriptAccess" value="always"><param name="wmode" value="opaque"><!--<![endif]-->                    <div>                        <p><a href="http://www.adobe.com/go/getflashplayer"><img src="http://www.adobe.com/images/shared/download_buttons/get_flash_player.gif" alt="Get Adobe Flash player"></a></p>                    </div>                    <!--[if !IE]>-->                    </object>                    <!--<![endif]-->                </object>            </div></td></tr><tr><td class="wblight" colspan="2"><br>&nbsp;&nbsp;&nbsp;blahblahblah "blah".</td></tr></tbody></table></form>