saving external variables in a class

[Omega]

Hello,

For my flash project I want to read variables from a text file and store them locally in flash variables. This workes fine if I put everything directly inside the flash project file (actions belonging to a certain frame). Because I need to write a lot of code I want to put it all inside an external actionscript file / class(es).
When I define a variable (like 'dummy' in the example below) and copy a value read from a text file to it, it fails (that is, the 'trace' returns 'undefined').
If I move the 'dummy = 2' line directly after 'function getInfo[..]{' it works fine. What goes wrong in the code below? And how can I fix it (that is, 'dummy' should still hold the assigned value (2) after the reading process).

Note: I left out the actual reading actions inside the 'if(success)' part for simplicity reasons.

class readMatchData 
{
   var dummy:Number;  	    

   // Constructor function
   function readMatchData()
   { ; }

   function getInfo(roundNum:Number):Void
   {
      var lv:LoadVars = new LoadVars();
      lv.onLoad = function(success:Boolean):Void 
      {
         if (success)
         {
            dummy = 2;  //this.dummy = 2; 
         } 
      }	 
      lv.load("round"+roundNum+".txt");       
      trace(dummy);
   }
}

Thanks in advance!

[Omega]

By the way, adding

else dummy = 3;
trace(dummy);

between line 17 and 18. Results in the following trace:

undefined
2

In other words, it appears that the second trace is executed before the first. (???).