Problem with navigateToUrl

Hey everybody! I have the following error in AIR and ASP.
I have the following code in AS3 in my AIR application:


var req:URLRequest = new URLRequest("localhost/login.asp");
req.method = URLRequestMethod.POST;      
var vars:URLVariables = new URLVariables();
vars.sesID = _nSessionId;
req.data = vars;
navigateToURL(req, "blank");

And in ASP I have the following code:


Response.Write(Request.QueryString("sesID"))
Response.Write(Request("sesID"))
Response.Write(Request.Form("sesID"))

But I don’t receive the value of “sesID” in my ASP page.
For more information, I send corrrectly the value of “_nSessionID”, I tried sending the variable by GET, by POST, like “localhost/login.asp?sesID=1234”, but it doesn’t work.
Could you give me some solution?
Thank you and sorry for my english.

Pimager