Question about LoadVars and URL

programming flash
1

When I am using the LoadVars class, how much can I send through (how long can the variable ‘url’ be?)…? ie,

var url = “http://somesite.com/folder/file.php?var1=val1&var2=val2”;
var obj = new LoadVars();
obj.load(url);
obj.onLoad = function(nice) {
if(nice) {
trace(‘yeah!’);
}
}

Thanks