Timer event within AS3 package

programming flash
1

ActionScript Code:
[FONT=Courier New][LEFT]package preloader [COLOR=#000000]{[/COLOR]
[COLOR=#0000FF]public[/COLOR] [COLOR=#000000]class[/COLOR] pl [COLOR=#000000]{[/COLOR]
[COLOR=#0000FF]import[/COLOR] flash.[COLOR=#000080]utils[/COLOR].[COLOR=#000080]Timer[/COLOR];
[COLOR=#0000FF]import[/COLOR] flash.[COLOR=#000080]events[/COLOR].[COLOR=#000080]TimerEvent[/COLOR];
[COLOR=#0000FF]public[/COLOR] [COLOR=#000000]function[/COLOR] tracewhat COLOR=#000000[/COLOR]:[COLOR=#0000FF]void[/COLOR] [COLOR=#000000]{[/COLOR]
[COLOR=#0000FF]trace[/COLOR] COLOR=#000000[/COLOR];
[COLOR=#000000]}[/COLOR]
[COLOR=#000000]var[/COLOR] preltimer:Timer = [COLOR=#000000]new[/COLOR] Timer COLOR=#000000[/COLOR];
preltimer.[COLOR=#000080]addEventListener[/COLOR] [COLOR=#000000]([/COLOR]TimerEvent.[COLOR=#000080]TIMER[/COLOR], tracewhat[COLOR=#000000])[/COLOR];
preltimer.[COLOR=#0000FF]start[/COLOR]COLOR=#000000[/COLOR];
[COLOR=#000000]}[/COLOR]
[COLOR=#000000]}[/COLOR]
[/LEFT]
[/FONT]

Doesn’t work. Errors returned are:

1120: Access of undefined property preltimer.
1120: Access of undefined property tracewhat.
1120: Access of undefined property preltimer.