Using sendAndLoad variables outside the function

This might seem like a silly problem to most of them but being a newbie I have been scratching my head over this. Can anybody tell me how can I get the value of uid in this code outside the function so that my other functions can use it too.

I have the following code.
But when I run the code.

I get the two traces:
21
undefined

Please inform me how can I get the userid value outside the function so that I can use it in all my other functions.
//=============================================
var userid;

function getuid()
{
mailsettings = sharedObject.getLocal("UserSettings");
myData = new LoadVars();
mydata.username = username;
mydata.pass = pass;
myData.sendAndLoad("getuid.php",myData,"POST");
myData.onLoad = getuser;
function getuser()
{
uid = this.useri;
userid = uid;
trace(userid);
}
trace(userid);
}

//=============================================

Thanks for the help in advance.

userid is in the scope of your loadvars object so change to
trace(mydata.userid);

or set userid as a var on the main timeline or a global var.

Hello Jamie,

I don't know how to get it working. Can you just send me an example using flash php so that I can actually get it working that would be really great of you.

Thanks in advance.

try

_root makes your code less portable though.....better would be to use _parent