Find our objectEncoding of SOL-File (SharedObject)

programming flash
1

I tried 2 things:

var so:SharedObject = SharedObject.getLocal("mySO");

//test1...
trace(so.objectEncoding); 
//always == so.defaultObjectEncoding, meaning 3 for AS3 no matter what object encoding was used on the SharedObject

//test2...
trace(so.size);
//Always traces the size it would have with choosen objectEncoding not actual size of file (see problem on test1)