ActionScript 2.0 :: How To Pass Variable To ASP Page

I went to pass a variable to an ASP page, the ASP will filter a recordset based on that value. I want the results of that filter to be passed back to my Flash page. I am, of course, using LoadVars() in the following way:

Code:
getserver="[URL]";
formdata = new loadVars();
formdata.SRV_NM=GA016DBB;//this is the variable I want to pass to my asp page for filtering
replydata= new LoadVars();
//this next section may be my problem
if(replydata.onload){
trace("yes!");
formdata.sendAndLoad(getserver, replydata, "POST");
} else {
trace("no");
}}