If you want to give a loadvars object multiple properties and attribute values, the most stupid approach is of course this:
Var lv = new loadingvars ();
lv.atta = "a";
lv.attb = "b";
...
In fact, there is a simple approach:
Var lv = new loadingvars ();
LV.
Decode ('atta = a & atttb = b');
or:
Var lv = new loadingvars ();
LV.
OnData ('atta = a & atttb = b');
Loadvars.Decode is the unapproved method of Flash, so I still tend to use OnData.