:Void different Flash 8 and Flash 6

programming flash
1

Howdy

I have this Function:


function executeCallback():Void {
mySender();
trace("CALLBACK");
};

When I export my movie in Flash 8 Actionscript2 everything works fine.
When I export it as Flash 6 AS 1 i get the following error:


**Error** Scene=Scene 1, Layer=Layer 1, Frame=1:Line 24: '{' erwartet
     function executeCallback():Void {

**Error** Scene=Scene 1, Layer=Layer 1, Frame=1:Line 28: Unerwartetes Auftreten von '}'
     };

Anzahl der ActionScript-Fehler: 2      Gemeldete Fehler: 2

any1 knows why? or how i can make this function that it will work in Flash 6 AS1??? Coz when i delete the VOID and export it in Flash 6 the Function is not working properly

thanx in advance