How to send http "multipart / form-data" message in script action?

Question

<form ENCTYPE="multipart/form-data"
    action="

how to send http "multipart / form-data" message in script action?

        function PostTest():void {
            var loader : URLLoader = new URLLoader();
            var request : URLRequest = new URLRequest(foolowUp);
            var variables : URLVariables = new URLVariables();
            request.method = URLRequestMethod.POST;
            //variables.key1 = "value1";  
            //variables.key2 = "value2";  
            var sendString:String ="";
            sendString += "------------Ij5GI3GI3ei4GI3ei4KM7GI3KM7KM7";
            sendString += "Content-Disposition: form-data; name=\"name\"";
            sendString += "abcomp";
            sendString += "------------Ij5GI3GI3ei4GI3ei4KM7GI3KM7KM7--";
            request.data = sendString;
            loader.addEventListener(Event.COMPLETE, Poston_complete);
            loader.addEventListener(IOErrorEvent.IO_ERROR, Poston_error);       
            try {
                loader.load(request);
            } 
            catch (error:Error) {
            }
        }
}

?

POST / cgi-bin / webboard / followup3.cgi HTTP / 1.1

Host: bbs.pramool.com

User-Agent: Mozilla / 5.0 (Windows; U; Windows NT 5.1; en-US; rv: 1.9.1.5). Gecko / 20091102 Firefox / 3.5.5 GTB5 (.NET CLR 3.5.30729)

Accept: text / html, application / xhtml + xml, application / xml; q = 0.9, /; q = 0.8

Accept-Language: en-us, en; q = 0.5

Accept-Encoding: gzip, deflate

Accept-Charset: ISO-8859-1, utf-8; q = 0.7, *; q = 0.7

Keep-Alive: 100

Connection: keep-alive

Referer: http://bbs.pramool.com/webboard/followup.php3

Cookie: _uid1757 = 94BB51D7.6; visit_time = 211

Content-Type: multipart / form-data; border = --------------------------- 117381980119623

Content-Length: 1434

----------------------------- 117381980119623

Content-Disposition: form-data; name= ""

abcomp

----------------------------- 117381980119623

Content-Disposition: form-data; name= ""

036314338

----------------------------- 117381980119623

Content-Disposition: form-data; name= "checkkey"

----------------------------- 117381980119623

Content-Disposition: form-data; name= " "

NERQMgpuT1

----------------------------- 117381980119623

Content-Disposition: form-data; name= ""

1

----------------------------- 117381980119623

Content-Disposition: form-data; name= ""

----------------------------- 117381980119623

Content-Disposition: form-data; name= "filedesc"

----------------------------- 117381980119623

Content-Disposition: form-data; name= ""

142

----------------------------- 117381980119623

Content-Disposition: form-data; name= "pageno"

----------------------------- 117381980119623

Content-Disposition: form-data; name= "pagepwd"

----------------------------- 117381980119623

Content-Disposition: form-data; name= "pageuser"

----------------------------- 117381980119623

Content-Disposition: form-data; name= ""

j530492

----------------------------- 117381980119623

Content-Disposition: form-data; name= "ktsub"

..-..... 15.. 52-..- MC - RO -..-...............

----------------------------- 117381980119623 -

HTTP/1.1 200 OK

: , 06 2009 07:29:08 GMT

: Apache

TITLE: Pramool.com - - !

Keep-Alive: timeout = 5, max = 100

: Keep-Alive

-: chunked

Content-Type: text/html; Charset = -874

Answer 1

: Adobe Docs

var header:URLRequestHeader = new URLRequestHeader( "enctype", "multipart/form-data" );

request.requestHeaders.push(header);